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Finding the Fourth Proportional to 276.97, 382.26 and 178.69

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Solution

The fourth proportional to 276.97, 382.26 and 178.69 is: 246.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.97 : 382.26 = 178.69 : x
  2. Step 2: Convert to fraction form
    276.97/382.26 = 178.69/x
  3. Step 3: Cross multiply
    276.97x = 382.26 × 178.69
  4. Step 4: Simplify right side
    276.97x = 68,306.04
  5. Step 5: Solve for x
    x = 68,306.04/276.97
  6. Step 6: Final answer
    x = 246.62

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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.