Advertisements
Advertisements
प्रश्न
Find the third proportional to 36, 18
Advertisements
उत्तर
Let the required third proportional be x
∴ 36, 18, x are in continued proportion
⇒ 36 : 18 = 18 : x
⇒ 36x = 18 × 18
⇒ x = `(18xx18)/36`
⇒ x = 9
∴ Required proportional = 9
APPEARS IN
संबंधित प्रश्न
If `(y- x)/x = 3/8` , find the value of `y /x`
A rectangular field is 100 m by 80 m. Find the ratio of breadth to its perimeter.
Two numbers are in the ratio 10: 11. Their sum is 168. Find the numbers.
An alloy of zinc and copper weighs `12 1/2`kg. if in the alloy, the ratio of zinc and copper is 1 : 4, find the weight of copper in it.
Which of the following numbers are in continued proportion:
3, 6 and 15
An office opens at 9 a.m. and closes at 5.30 p.m. with a lunch break of 30 minutes. What is the ratio of lunch break to the total period in the office?
In the following figure, find the ratio of the area of the shaded portion to that of the whole figure:
There are 20 girls and 15 boys in a class. What is the ratio of number of girls to the total number of students in the class?
Mother wants to divide Rs 36 between her daughters Shreya and Bhoomika in the ratio of their ages. If age of Shreya is 15 years and age of Bhoomika is 12 years, find how much Shreya and Bhoomika will get.
Present age of father is 42 years and that of his son is 14 years. Find the ratio of age of father to the age of son when father was 30 years old.
