Algebra - Ration and Proportion Notes & Question for ICSE Class 10 2021
Syllabus for Ration & Proportion
(iii) Ratio and Proportion
(a) Proportion, Continued proportion, mean proportion
(b) Componendo, dividendo, alternendo, invertendo properties and their combinations.
Quick Notes on Ration & Proportion
Ratio is expressed as a:b , It is nothing but a comparison between two stuffs.
proportion: If among the four quantities a,b,c,d. If the ratio of a:b = c:d, we say that they are in proportion.
Types of ratio:
Continued Proportion
for a,b,c
a:b::b:c , also we can say a/b = b/c where b is the mean proportion.
for a,b,c,d
a:b::b:c::c:d i.e a/b=b/c=c/d
Properties of Proportion
Question to Practice for Ration & Proportion
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