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Finding the Fourth Proportional to 376.38, 563.88 and 321.71

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Solution

The fourth proportional to 376.38, 563.88 and 321.71 is: 481.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.38 : 563.88 = 321.71 : x
  2. Step 2: Convert to fraction form
    376.38/563.88 = 321.71/x
  3. Step 3: Cross multiply
    376.38x = 563.88 × 321.71
  4. Step 4: Simplify right side
    376.38x = 181,403.02
  5. Step 5: Solve for x
    x = 181,403.02/376.38
  6. Step 6: Final answer
    x = 481.97

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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.