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Finding the Fourth Proportional to 276.47, 414.89 and 178.97

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Solution

The fourth proportional to 276.47, 414.89 and 178.97 is: 268.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.47 : 414.89 = 178.97 : x
  2. Step 2: Convert to fraction form
    276.47/414.89 = 178.97/x
  3. Step 3: Cross multiply
    276.47x = 414.89 × 178.97
  4. Step 4: Simplify right side
    276.47x = 74,249.89
  5. Step 5: Solve for x
    x = 74,249.89/276.47
  6. Step 6: Final answer
    x = 268.57

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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.