Finding the Fourth Proportional to 409.84, 614.36 and 135.79
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Solution
The fourth proportional to 409.84, 614.36 and 135.79 is: 203.55
Step by Step Solution
- Step 1: Write the proportion equation
409.84 : 614.36 = 135.79 : x - Step 2: Convert to fraction form
409.84/614.36 = 135.79/x - Step 3: Cross multiply
409.84x = 614.36 × 135.79 - Step 4: Simplify right side
409.84x = 83,422.75 - Step 5: Solve for x
x = 83,422.75/409.84 - Step 6: Final answer
x = 203.55
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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.