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Finding the Fourth Proportional to 243.35, 337.29 and 239.43

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Solution

The fourth proportional to 243.35, 337.29 and 239.43 is: 331.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.35 : 337.29 = 239.43 : x
  2. Step 2: Convert to fraction form
    243.35/337.29 = 239.43/x
  3. Step 3: Cross multiply
    243.35x = 337.29 × 239.43
  4. Step 4: Simplify right side
    243.35x = 80,757.34
  5. Step 5: Solve for x
    x = 80,757.34/243.35
  6. Step 6: Final answer
    x = 331.86

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.