Question

mean proportional of 4 abd 25​

Answer 1

Answer:

We have to find b such that 4 : b = b : 25. Thus we must have

b

4

=

25

b

.

Therefore b

2

=4×25=100, which gives b=

100

=10.

hope it helps you

Answer 2

Answer:

10

Step-by-step explanation:

let consider b is the mean propotional of a and c

we know a=4, nd c=25

let mean propotional of ac , is

b

b^2= ac

b'2=4×25

= 100

b =√100

b=+/- 10

Hence b cannot be negative

so, b=10