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Arka Roy

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Susmit saurabh

a year ago

This lecture is really helpful for me sir...good work...waiting for next lecture....

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Pranjal Srivastava

a year ago

thank you

Ratio and Proportion made easy Lesson 6

Properties of proportion If 4 quantities are in proportion then many other proportions may be deduced using the properties of fraction.

Properties of proportion Property 1:Invertendo b d if a = c then-=- Example: 2-hence 5 = 4

Properties of proportion Property 2: Alternando if a = then a = b Example: hence = 6

Properties of proportion Property 3: Componendo If a = c then a+b- c+d b d Example 2+3 4+6 hence 3 6

Properties of proportion Property 4 Dividendo if a = then abb =- Example: hence 3 4-6 3 6

Properties of proportion Property 5: Componendo and Dividendo a If C a -b c-d Example: 2+3 4+6 hence, 2-3 4-6

Thank You Arka Roy