1) What is the mean proportional of 3
and 12 ?*
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Answered by
0
Answer:
it can help you
Step-by-step explanation:
Let the third proportional to 12 and 30 be x.
Then, 12 : 30 :: 30 : x
⇔ 12x = 30 × 30
⇔x=
12
(30×30)
=75
∴ Third proportional to 12 and 30 = 75.
Mean proportional between 9 and 25=
9×25
=15
∴ Required ratio = 75 : 15 = 5 : 1.
Answered by
1
Step-by-step explanation:
the mean proportional of 3 and 12.is 6.
therefore the mean proportional between 3and 12 is 6.
√12×3= √36=6.
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