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Finding the Fourth Proportional to 276.87, 382.10 and 158.89

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Solution

The fourth proportional to 276.87, 382.10 and 158.89 is: 219.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.87 : 382.10 = 158.89 : x
  2. Step 2: Convert to fraction form
    276.87/382.10 = 158.89/x
  3. Step 3: Cross multiply
    276.87x = 382.10 × 158.89
  4. Step 4: Simplify right side
    276.87x = 60,711.87
  5. Step 5: Solve for x
    x = 60,711.87/276.87
  6. Step 6: Final answer
    x = 219.28

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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.