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Finding the Fourth Proportional to 354.85, 529.09 and 337.21

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Solution

The fourth proportional to 354.85, 529.09 and 337.21 is: 502.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.85 : 529.09 = 337.21 : x
  2. Step 2: Convert to fraction form
    354.85/529.09 = 337.21/x
  3. Step 3: Cross multiply
    354.85x = 529.09 × 337.21
  4. Step 4: Simplify right side
    354.85x = 178,414.44
  5. Step 5: Solve for x
    x = 178,414.44/354.85
  6. Step 6: Final answer
    x = 502.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.