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Finding the Fourth Proportional to 337.86, 506.79 and 142.81

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Solution

The fourth proportional to 337.86, 506.79 and 142.81 is: 214.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    337.86 : 506.79 = 142.81 : x
  2. Step 2: Convert to fraction form
    337.86/506.79 = 142.81/x
  3. Step 3: Cross multiply
    337.86x = 506.79 × 142.81
  4. Step 4: Simplify right side
    337.86x = 72,372.15
  5. Step 5: Solve for x
    x = 72,372.15/337.86
  6. Step 6: Final answer
    x = 214.21

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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.