Finding the Fourth Proportional to 33.82, 50.79 and 20.99
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Solution
The fourth proportional to 33.82, 50.79 and 20.99 is: 31.53
Step by Step Solution
- Step 1: Write the proportion equation
33.82 : 50.79 = 20.99 : x - Step 2: Convert to fraction form
33.82/50.79 = 20.99/x - Step 3: Cross multiply
33.82x = 50.79 × 20.99 - Step 4: Simplify right side
33.82x = 1,066.29 - Step 5: Solve for x
x = 1,066.29/33.82 - Step 6: Final answer
x = 31.53
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.