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Finding the Fourth Proportional to 624.88, 937.86 and 487.72

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Solution

The fourth proportional to 624.88, 937.86 and 487.72 is: 732.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.88 : 937.86 = 487.72 : x
  2. Step 2: Convert to fraction form
    624.88/937.86 = 487.72/x
  3. Step 3: Cross multiply
    624.88x = 937.86 × 487.72
  4. Step 4: Simplify right side
    624.88x = 457,413.08
  5. Step 5: Solve for x
    x = 457,413.08/624.88
  6. Step 6: Final answer
    x = 732.00

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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.