Finding the Fourth Proportional to 409.62, 614.28 and 135.68
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Solution
The fourth proportional to 409.62, 614.28 and 135.68 is: 203.46
Step by Step Solution
- Step 1: Write the proportion equation
409.62 : 614.28 = 135.68 : x - Step 2: Convert to fraction form
409.62/614.28 = 135.68/x - Step 3: Cross multiply
409.62x = 614.28 × 135.68 - Step 4: Simplify right side
409.62x = 83,342.44 - Step 5: Solve for x
x = 83,342.44/409.62 - Step 6: Final answer
x = 203.46
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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.