Question

Find the fourth proportion to each of the following
(i) 7, 8, 14​

Answer 1

Answer:

16

Step-by-step explanation:

Let the fourth proportion is X,

then 7 : 8 :: 14 : X

or,

$\frac{7}{8} = \frac{14}{x}$

or,

$x = \frac{8 \times 14}{7}$

or,

$x = 16$

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Answer 2

Answer:

16

Step-by-step explanation:

Let the 4th proportion be X

then,

7 : 8 :: 14 : X

=> 7X = 14 × 8

=> 7X = 112

=> X = 112/7

=> X = 16

Hence, the fourth proportion be 16.