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Finding the Fourth Proportional to 487.95, 730.50 and 372.85

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Solution

The fourth proportional to 487.95, 730.50 and 372.85 is: 558.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    487.95 : 730.50 = 372.85 : x
  2. Step 2: Convert to fraction form
    487.95/730.50 = 372.85/x
  3. Step 3: Cross multiply
    487.95x = 730.50 × 372.85
  4. Step 4: Simplify right side
    487.95x = 272,366.93
  5. Step 5: Solve for x
    x = 272,366.93/487.95
  6. Step 6: Final answer
    x = 558.19

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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.