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Finding the Fourth Proportional to 651.18, 971.85 and 624.72

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Solution

The fourth proportional to 651.18, 971.85 and 624.72 is: 932.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.18 : 971.85 = 624.72 : x
  2. Step 2: Convert to fraction form
    651.18/971.85 = 624.72/x
  3. Step 3: Cross multiply
    651.18x = 971.85 × 624.72
  4. Step 4: Simplify right side
    651.18x = 607,134.13
  5. Step 5: Solve for x
    x = 607,134.13/651.18
  6. Step 6: Final answer
    x = 932.36

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.