Question

(13) Find the mean proportion of
(a) 32,8
(b) 18,72​

Answer 1

Answer:

(a) 16 is the mean proportional between 8 and 32.

(b) Four numbers a, b, c and d are in proportion when, a/b=c/d.

Also, a and b are in mean proportion, a/x=x/b, i.e, x^2=ab.

So, for 8 and 72 let us use the variable x.

So, x^2=8×72

=>x=√(8×72) =>x=√(8×8×3×3)

=> x = 24.

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Answer 2

Answer:

ok hello

Step-by-step explanation:

the mean proportional of 18 and 72 is 36. ...

and

16 is the mean proportional between 8 and 32.