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Finding the Fourth Proportional to 624.43, 861.67 and 344.63

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Solution

The fourth proportional to 624.43, 861.67 and 344.63 is: 475.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.43 : 861.67 = 344.63 : x
  2. Step 2: Convert to fraction form
    624.43/861.67 = 344.63/x
  3. Step 3: Cross multiply
    624.43x = 861.67 × 344.63
  4. Step 4: Simplify right side
    624.43x = 296,959.92
  5. Step 5: Solve for x
    x = 296,959.92/624.43
  6. Step 6: Final answer
    x = 475.57

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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.