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Finding the Fourth Proportional to 733.15, 1,098.78 and 424.85

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Solution

The fourth proportional to 733.15, 1,098.78 and 424.85 is: 636.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    733.15 : 1,098.78 = 424.85 : x
  2. Step 2: Convert to fraction form
    733.15/1,098.78 = 424.85/x
  3. Step 3: Cross multiply
    733.15x = 1,098.78 × 424.85
  4. Step 4: Simplify right side
    733.15x = 466,811.99
  5. Step 5: Solve for x
    x = 466,811.99/733.15
  6. Step 6: Final answer
    x = 636.72

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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.