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Finding the Fourth Proportional to 488.52, 732.38 and 257.27

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Solution

The fourth proportional to 488.52, 732.38 and 257.27 is: 385.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.52 : 732.38 = 257.27 : x
  2. Step 2: Convert to fraction form
    488.52/732.38 = 257.27/x
  3. Step 3: Cross multiply
    488.52x = 732.38 × 257.27
  4. Step 4: Simplify right side
    488.52x = 188,414.45
  5. Step 5: Solve for x
    x = 188,414.45/488.52
  6. Step 6: Final answer
    x = 385.68

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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.