 | George Clinton Shutts - 1912 - 392 σελίδες
...that point by the two tangents to the circle. 315. THEOREM. // two secants intersect without a circle, the ratio of the first to the second is equal to the ratio of the external segment of the second to the external segment of the first. Given a circle with secants AB... | |
 | John William Hopkins, Patrick Healy Underwood - 1912 - 406 σελίδες
...Thus, f = £ becomes f = §, and is = M becomes | =|. Four quantities are said to be in proportion, or to be proportional when the ratio of the first to the second equals the ratio of the third to the fourth. The numbers, 2, 3, 4, 6 are in proportion for, | = £.... | |
 | 1915 - 830 σελίδες
...ratios is said to form a proportion, or in other words four quantities are said to be in proportion when the ratio of the first to the second is equal to the ratio of the third to the fourth. Thus 5 ft. $25 2 ft. $10 is a proportion. This is often written 5 ft. : 2 ft.... | |
 | George Hervey Hallett, Robert Franklin Anderson - 1917 - 432 σελίδες
...Find the numbers. Proportion 171. Definitions. Four numbers or quantities are said to be in proportion when the ratio of the first to the second is equal to the ratio of the third to the fourth. Remark. In what follows we shall use the expression, the ratio of one number to... | |
 | Harry Morton Keal, Nancy Seymour Phelps - 1917 - 240 σελίδες
...x-2 5x-7 l0x+11 12. 3x-5 6x+ 7 3x DIRECT VARIATION 91 20. Find three consecutive numbers such that the ratio of the first to the second is equal to the ratio of 5 times the third to 5 times the first plus 16. Variation 101 Direct Proportion: If a train travels... | |
 | Harry Morton Keal - 1917 - 148 σελίδες
...21° to the supplement of the same angle. Find the angle. 20. Find three consecutive numbers such that the ratio of the first to the second is equal to the ratio of 5 times the third to 5 times the first plus 16. Variation 101 Direct Proportion: If a train travels... | |
 | Henry Sinclair Hall - 1918 - 382 σελίδες
...ж = y, or г = ж + y. У PROPORTION. 348. DEFINITION. Four quantities are said to be in proportion when the ratio of the first to the second is equal to the ratio of the third to the fourth. The four quantities are called proportionals, or the terms of the proportion.... | |
 | Edson Homer Taylor, Fiske Allen - 1919 - 272 σελίδες
...o:f=f:5. AK IK 6.8:11=24:1. 10. — = £?• 16. a : 4 = 4. : 12. TO 36 39. Proportional lines. Four lines are said to be proportional when the ratio of the first to the second equals the ratio of the third to the fourth. Draw a triangle ABC with AB = & in., BC = 4 in., and AC=3... | |
 | Emile Borel - 1926 - 256 σελίδες
...diagonal and side of a square, we can easily prove by geometry that the ratio of the first remainder to the second is equal to the ratio of the second to the third, and so on; it is therefore impossible that the operation should come to an end. This geometrical fact... | |
 | Marcus Benjamin, Arthur Elmore Bostwick, Gerald Van Casteel, George Jotham Hagar - 1910 - 546 σελίδες
...expressed by division, which one quantity bears to another. Four quantities are said to be in proportion when the ratio of the first to the second is equal to the ratio of the third to the fourth. A proportion may be written in either of two ways; thus if the ratio of a to &... | |
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Proportional, when the ratio of the first to the second is equal to the ratio of the second to the third. 
