Advertisements
Advertisements
प्रश्न
Find the mean proportion of: 8.1 and 2.5
Advertisements
उत्तर
Let the x be the mean proportion of 8.1 and 2.5
∴ 8.1 : x : : x : 2.5
∴ x2 = 8.1 x 2.5
∴ x = `sqrt(8.1 xx 2.5)`
= `sqrt(20.25)`
= 4.5.
APPEARS IN
संबंधित प्रश्न
If y is the mean proportional between x and y; show that y(x+z) is the mean p roporti ona I between x2+ y2 and y2+ z2
If u, v, w, and x are in continued proportion, then prove that (2u+3x) : (3u+4x) : : (2u3+3v3) : (3u3+4v3)
`("pqr")^2 (1/"p"^4 + 1/"q"^4 + 1/"r"^4) = ("p"^4 + "q"^4 + "r"^4)/"q"^2`
Find the third proportional to:
`a/b + b/c, sqrt(a^2 + b^2)`.
The ratio 92 : 115 in its simplest for is
In covering 111 km, a car consumes 6 L of petrol. How many kilometers will it go to 10 L of petrol?
If a, b, c are in continued proportion, prove that: `(pa^2+ qab+ rb^2)/(pb^2+qbc+rc^2) = a/c`
5 : `square` : : 10 : 8 : : 15 : `square`
10 g of caustic soda dissolved in 100 mL of water makes a solution of caustic soda. Amount of caustic soda needed for 1 litre of water to make the same type of solution is ______.
Determine if the following are in proportion.
15, 45, 40, 120
A picture frame’s length and width are in the ratio 4 : 3. If the length is 28 cm, what is the width?
