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 Βιβλία Βιβλία 1 - 10 από 113 για Four quantities are in proportion when the ratio of the first to the second is equal....
Four quantities are in proportion when the ratio of the first to the second is equal to the ratio of the third to the fourth.
Mathematical Dictionary and Cyclopedia of Mathematical Science: Comprising ... - Σελίδα 453
των Charles Davies, William Guy Peck - 1855 - 592 σελίδες
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## Universal Arithmetick: Or, A Treatise of Arithmetical Composition and Resolution

Sir Isaac Newton - 1769 - 599 σελίδες
...geometrical- Progreflion. 70. Fiur Quantities are in geometrical Proportion when the Ratio of tKe Fir/! ta the Second is equal to the Ratio of the Third to the Fourth ; and Quantities are in geometrical Progreifion, when they intreafe, or decreafe, by equal Ratios :...

## A Course of Mathematics: For the Use of Academies as Well as ..., Τόμος 1

Charles Hutton - 1812
...5ec. 77. Proportion is an equality of ratios. Thus, 78. Three quantities are said to be Proportional, when the ratio of the first to the second is equal to the ratio of the second to the third. As of the three quantities A (2), B (4), c (8), where .J ;= | = 2, both the same...

## A Course of Mathematics: For the Use of Academies, as Well as Private ...

Charles Hutton - 1822
...,^=|. 77. Proportion is an equality of ratios. Thua, 78. Three quantities are said to be Proportional, when the ratio of the first to the second, is equal to the ratio of the second to the third. As of the three quantities A (2), B (4), c (8), where f =f =5, both the same ratio....

## Elements of Geometry Upon the Inductive Method

James Hayward - 1829 - 172 σελίδες
...f = 1 ; that is, the ratio of 2 to 6 is equal to one third. 77. When four magnitudes are such that the ratio of the first to the second, is equal to the ratio of the third to the fourth, these four magnitudes are said to be in proportion. Proportion is equality of ratios. " A PROPORTION,"...

## ELEMENTS OF GEOMETRY UPON THE INDUCTIVE METHOD.

JAMES HAYWARD - 1829
...— -i ; that is, the ratio of 2 to 6 is equal to one third. 77. When four magnitudes are such that the ratio of the first to the second, is equal to the ratio of the third to the fourt.n, these four magnitudes arc said to be in proportion. Proportion is equality of ratios, " A...

## A New and Easy Introduction to the Mathematics: Containing. A system of ...

Ira Wanzer - 1831 - 396 σελίδες
...the ratio. Thus, 3 : 5, denotes the ratio of 3 to 5. Four quantities are said to be in geometrical proportion, when the ratio of the first to the second...is equal to the ratio of the third to the fourth. Thus, the four numbers 8, 4, 14, 7, are proportional, because the ratio 8 : 4 is equal to the ratio...

## Mechanics' Magazine, and Journal of the Mechanics' Institute, Τόμος 4

1835
...2. Proportion is an equality of ratios. Thus— 3. Three quantities are said to be proper, tional, when the ratio of the first to the second is equal to the ratio of the second to the third. As of the three quantities A (2), A (4), с (8), where two fourths are equal to...

## A Treatise on Geometry and Its Application in the Arts

Dionysius Lardner - 1840 - 314 σελίδες
...divide the product by a, and the quotient will be d. (264.) When three magnitudes are so related that the ratio of the first to the second is equal to the ratio of the second to the third, they are said to be in confirmed proportion; and the third is said to be a third...

## Elementary Course of Geometry ...

Charles William Hackley - 1847 - 103 σελίδες
...Inequality. 76. Proportion is an equality of ratios. Thus, 77. Three quantities are said to be proportional when the ratio of the first to the second is equal to the ratio of the second to the third. As of the three quantities, A = 2, B = 4, C = 8, where \ = £ = \, both the same...

## Arithmetic: Designed for Academies and Schools, Uniting the Inductive ...

Charles Davies - 1847 - 360 σελίδες
...This relation between four numbers is called proportion ; and generally, Four numbers are said to be in proportion when the ratio of the first to the second is the same as that of the third to the fourth. Hence, 181. How do you determine what part one number...