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Finding the Fourth Proportional to 624.13, 861.29 and 344.37

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Solution

The fourth proportional to 624.13, 861.29 and 344.37 is: 475.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.13 : 861.29 = 344.37 : x
  2. Step 2: Convert to fraction form
    624.13/861.29 = 344.37/x
  3. Step 3: Cross multiply
    624.13x = 861.29 × 344.37
  4. Step 4: Simplify right side
    624.13x = 296,600.72
  5. Step 5: Solve for x
    x = 296,600.72/624.13
  6. Step 6: Final answer
    x = 475.23

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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.