Advertisements
Advertisements
प्रश्न
Find the fourth proportional to:
2xy, x2, y2
Advertisements
उत्तर
Let A be the fourth proportional then
2xy : x2 = y2 : A
⇒ `(2xy)/x^2 = y^2/"A"`
⇒ A = `(x^2y^2)/(2xy)`
⇒ A = `(xy)/(2)`.
APPEARS IN
संबंधित प्रश्न
6 is the mean proportion between two numbers x and y and 48 is the third proportional of x and y. Find the numbers.
Find the mean proportional between a – b and a3 – a2b
Find the fourth proportion to the following:
3,5 and 15
If a, b, c are in continued proportion, prove that a : c = (a2 + b2) : (b2 + c2).
If 22.5 m of a uniform iron rod weighs 85.5 kg, what will be the weight of 5 m of the same rod?
40 men can finish a piece of work in 26 days. How many men will be needed to finish it in 16 days?
Find two numbers whose mean proportional is 16 and the third proportional is 128.
A gets double of what B gets and B gets double of what C gets. Find A : B and B : C and verify whether the result is in proportion or not
If two ratios are equal, then they are in ______.
A picture frame’s length and width are in the ratio 4 : 3. If the length is 28 cm, what is the width?
