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Finding the Fourth Proportional to 624.17, 860.81 and 531.22

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Solution

The fourth proportional to 624.17, 860.81 and 531.22 is: 732.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.17 : 860.81 = 531.22 : x
  2. Step 2: Convert to fraction form
    624.17/860.81 = 531.22/x
  3. Step 3: Cross multiply
    624.17x = 860.81 × 531.22
  4. Step 4: Simplify right side
    624.17x = 457,279.49
  5. Step 5: Solve for x
    x = 457,279.49/624.17
  6. Step 6: Final answer
    x = 732.63

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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.