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Finding the Fourth Proportional to 624.12, 862.29 and 531.84

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Solution

The fourth proportional to 624.12, 862.29 and 531.84 is: 734.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.12 : 862.29 = 531.84 : x
  2. Step 2: Convert to fraction form
    624.12/862.29 = 531.84/x
  3. Step 3: Cross multiply
    624.12x = 862.29 × 531.84
  4. Step 4: Simplify right side
    624.12x = 458,600.31
  5. Step 5: Solve for x
    x = 458,600.31/624.12
  6. Step 6: Final answer
    x = 734.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.