PATIO & PROPORTION
0. What will be the ratio of third proportional to 12 and 30 and the mean proportional between
9 and 25?
Answers
Answered by
1
Answer:
2:1
"The ratio between the third proportional of 12 and 30 and mean proportional of 9 and25 is`2:1`b.
Answered by
3
Answer:
1. Let the third proportional of 12 and 30 be x.
=> 12:30::30:x
Product of mean terms = Product of extreme terms
=> 12 × x = 30 × 30
=> 12x = 900
=> x = 75
Hence, the third proportional of 12 and 30 is 75.
2. Let the mean proportional between 9 and 25 be x.
=> 9:x::x:25
Product of mean terms = Product of extreme terms
=> x × x = 9 × 25
=> x² = 225
=> x = 15
Hence, the mean proportional between 9 and 25 is 15.
Ratio = 75:15 = 5:1
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