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Finding the Fourth Proportional to 376.98, 520.20 and 229.66

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Solution

The fourth proportional to 376.98, 520.20 and 229.66 is: 316.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.98 : 520.20 = 229.66 : x
  2. Step 2: Convert to fraction form
    376.98/520.20 = 229.66/x
  3. Step 3: Cross multiply
    376.98x = 520.20 × 229.66
  4. Step 4: Simplify right side
    376.98x = 119,469.13
  5. Step 5: Solve for x
    x = 119,469.13/376.98
  6. Step 6: Final answer
    x = 316.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.