 | Samuel Webber - 1808 - 466 σελίδες
...for | 1T6 =2, but y =8. Four numbers are directly proportional, when the ratio of the first to the second is the same, as that of the third to the fourth. As 2 : 4 : : 3 : 6. Four numbers are said to be reciprocally or inversely proportional, when the first... | |
 | Samuel Webber - 1812 - 260 σελίδες
...; for £=y=2, but *^=8. Four numbers are directly proportional, when the ratio of the first to the second is the same, as that of the third to the fourth. As 2 : 4 : : 3 : 6. Four numbers are said to be reciprocally, or inversely proportional, when the first... | |
 | George Roberts Perkins - 1841 - 274 σελίδες
...to 7£ hours, is 31-i-7J=4f. When there are four quantities, of which the ratio of the first to the second is the same as that of the third to the fourth, these four quantities are said to be in proportion. Thus 4, 6, 8, and 12, are in proportion, since... | |
 | Charles Davies - 1846 - 370 σελίδες
...relation between numbers called ? When are four numbers said to be in proportion ? the first to the second is the same as that of the third to the fourth. Hence, PROPORTION is an equality of ratios between numbers compared together two and two. 185. We express... | |
 | Charles Davies - 1847 - 368 σελίδες
...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 is of another? 189. If one yard of cloth cost... | |
 | Charles Davies - 1847 - 368 σελίδες
...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 is of another? 182. If one yard of cloth cost... | |
 | George Roberts Perkins - 1849 - 356 σελίδες
...to 1\ hours, is 3i-^7i=i§. When there are four quantities, of which the ratio of the first to the second is the same as that of the third to the fourth, these four quantities are said to be in proportion. Thus, 4, 6, 8, and 12, are in proportion, since... | |
 | Charles Davies - 1850 - 148 σελίδες
...term, " A geometrical proportion/' is applied to four numbers, in which the ratio of the first to the second is the same as that of the third to the fourth....a geometrical proportion, of which the ratio is 2. 66. We will now state some further advantages which result from regarding the ratio as the quotient... | |
 | Charles Davies - 1850 - 398 σελίδες
...the ratio of the first to the second is the same as that of the third to the fourth. Thus, Example. 2 : 4 :: 6 : 12, is a geometrical proportion, of which the ratio is 2. Further ad- § 169. We will now state some further advantages which result from regarding the ratio... | |
 | Charles Davies - 1850 - 402 σελίδες
...geometrical lion defined. proportion, is applied to tour numbers, in which the ratio of the first to the second is the same as that of the third to the fourth. Thus, calpnipor- .... i- i /- , Example. 2 : 4 :: 6 : 12, is a geometrical proportion, of which the ratio... | |
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D' 125. A PROPORTION is an equality of ratios. Four magnitudes are in proportion, when the ratio of the first to the second is the same as that of the third to the fourth. Thus, the ratios... 
