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Finding the Fourth Proportional to 337.41, 506.42 and 215.78

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Solution

The fourth proportional to 337.41, 506.42 and 215.78 is: 323.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    337.41 : 506.42 = 215.78 : x
  2. Step 2: Convert to fraction form
    337.41/506.42 = 215.78/x
  3. Step 3: Cross multiply
    337.41x = 506.42 × 215.78
  4. Step 4: Simplify right side
    337.41x = 109,275.31
  5. Step 5: Solve for x
    x = 109,275.31/337.41
  6. Step 6: Final answer
    x = 323.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.