Question

Find the value of the unknown numbers if the following values are in continued proportion

a ) 15, 45, x
b ) 20, x , 2000

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Answer 1

Answer:

a ) 75

b ) 200

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Answer 2

Answer:

a. 15 , 45 , x are continued proportion.

15 , 45 ,45 x are in proportion.

or 15: 45: 45 : x

or 15 × x 45 × 45

= x 45×45/15 = 135

b. 20 , x , 2000 are continued proportion

20 , x , 2000 are in proportion

or 20 : 20 : x :2000

or 20 × 20 × 2000

= x 20×20/ 2000 = 4 : 20