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Finding the Fourth Proportional to 732.38, 1,098.77 and 513

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Solution

The fourth proportional to 732.38, 1,098.77 and 513 is: 769.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    732.38 : 1,098.77 = 513 : x
  2. Step 2: Convert to fraction form
    732.38/1,098.77 = 513/x
  3. Step 3: Cross multiply
    732.38x = 1,098.77 × 513
  4. Step 4: Simplify right side
    732.38x = 563,666.45
  5. Step 5: Solve for x
    x = 563,666.45/732.38
  6. Step 6: Final answer
    x = 769.64

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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.