Question

find the mean proportional between a) 5 and 20 b) 25 and 49​

Answer 1

Solution :

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Mean Proportional of

a and b is √ab

_______________________

Here ,

i) a = 5 , b = 20

Proportional of a and b

= √ (5×20)

=√100

= √10²

= 10

ii ) a = 25 , b = 49

Mean Proportional of 25

and 49

= √25×49

= √5×5×7×7

= 5 × 7

= 35

••••

Answer 2

LET THE PROPORTION BE 'X'

a) X=√AxB

= √5x20

= √100

= 10

the mean proportion is 10

b) X= √AxB

= √25x49

= √1225

= 35

the mean proportion is 35