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Finding the Fourth Proportional to 732.68, 1,011.22 and 418

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Solution

The fourth proportional to 732.68, 1,011.22 and 418 is: 576.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    732.68 : 1,011.22 = 418 : x
  2. Step 2: Convert to fraction form
    732.68/1,011.22 = 418/x
  3. Step 3: Cross multiply
    732.68x = 1,011.22 × 418
  4. Step 4: Simplify right side
    732.68x = 422,689.96
  5. Step 5: Solve for x
    x = 422,689.96/732.68
  6. Step 6: Final answer
    x = 576.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.