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Finding the Fourth Proportional to 487.57, 730.92 and 179.35

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Solution

The fourth proportional to 487.57, 730.92 and 179.35 is: 268.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    487.57 : 730.92 = 179.35 : x
  2. Step 2: Convert to fraction form
    487.57/730.92 = 179.35/x
  3. Step 3: Cross multiply
    487.57x = 730.92 × 179.35
  4. Step 4: Simplify right side
    487.57x = 131,089.53
  5. Step 5: Solve for x
    x = 131,089.53/487.57
  6. Step 6: Final answer
    x = 268.86

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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.