Question

mean proportional of 3, 27 and 4, D​

Answer 1

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Answer 2

The value of D is 36.

Step-by-step explanation:

To find : Mean proportional of 3, 27 and 4, D​.

Solution :

When 3,27 and 4,D are in proportion then $3:27::4:D$.

If a:b::c:d are in proportion then $\frac{a}{b}=\frac{c}{d}$

Here, a=3, b=27, c=4 and d=D

$\frac{3}{27}=\frac{4}{D}$

$D=\frac{4\times 27}{3}$

$D=4\times 9$

$D=36$

Therefore, the value of D is 36.

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