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Finding the Fourth Proportional to 376.60, 563.88 and 278.38

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Solution

The fourth proportional to 376.60, 563.88 and 278.38 is: 416.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.60 : 563.88 = 278.38 : x
  2. Step 2: Convert to fraction form
    376.60/563.88 = 278.38/x
  3. Step 3: Cross multiply
    376.60x = 563.88 × 278.38
  4. Step 4: Simplify right side
    376.60x = 156,972.91
  5. Step 5: Solve for x
    x = 156,972.91/376.60
  6. Step 6: Final answer
    x = 416.82

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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.