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Finding the Fourth Proportional to 337.92, 506.56 and 155.21

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Solution

The fourth proportional to 337.92, 506.56 and 155.21 is: 232.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    337.92 : 506.56 = 155.21 : x
  2. Step 2: Convert to fraction form
    337.92/506.56 = 155.21/x
  3. Step 3: Cross multiply
    337.92x = 506.56 × 155.21
  4. Step 4: Simplify right side
    337.92x = 78,623.18
  5. Step 5: Solve for x
    x = 78,623.18/337.92
  6. Step 6: Final answer
    x = 232.67

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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.