Question

find the mean proprotion betwen 81 and 121,

Answer 1

Hey frnd here is ur ans.....

Let the mean proportion be x

now,

81 : x : 121

81/x = x/121

x^2=9801

x = √9801

x = 99

Hope it helps you✌✌

Thankyou ☺☺

Arya❤

Answer 2

Mean proportion between 81 & 121 = 99

Step-by-step explanation:

the mean proportion between 81 and 121,

81 : a  : 121

=> 81 : a  :: a  : 121

=> 81/a = a/121

=> a² = 81 * 121

=> a² = 9² * 11²

=> a² = ( 9  * 11)²

=> a² = 99²

=> a = 99

Mean proportion between 81 & 121 = 99

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