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Finding the Fourth Proportional to 624.21, 861.41 and 344.44

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Solution

The fourth proportional to 624.21, 861.41 and 344.44 is: 475.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.21 : 861.41 = 344.44 : x
  2. Step 2: Convert to fraction form
    624.21/861.41 = 344.44/x
  3. Step 3: Cross multiply
    624.21x = 861.41 × 344.44
  4. Step 4: Simplify right side
    624.21x = 296,704.06
  5. Step 5: Solve for x
    x = 296,704.06/624.21
  6. Step 6: Final answer
    x = 475.33

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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.