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Finding the Fourth Proportional to 732.92, 1,011.49 and 418.30

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Solution

The fourth proportional to 732.92, 1,011.49 and 418.30 is: 577.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    732.92 : 1,011.49 = 418.30 : x
  2. Step 2: Convert to fraction form
    732.92/1,011.49 = 418.30/x
  3. Step 3: Cross multiply
    732.92x = 1,011.49 × 418.30
  4. Step 4: Simplify right side
    732.92x = 423,102.69
  5. Step 5: Solve for x
    x = 423,102.69/732.92
  6. Step 6: Final answer
    x = 577.29

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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.