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Finding the Fourth Proportional to 276.62, 381.89 and 166.13

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Solution

The fourth proportional to 276.62, 381.89 and 166.13 is: 229.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.62 : 381.89 = 166.13 : x
  2. Step 2: Convert to fraction form
    276.62/381.89 = 166.13/x
  3. Step 3: Cross multiply
    276.62x = 381.89 × 166.13
  4. Step 4: Simplify right side
    276.62x = 63,441.89
  5. Step 5: Solve for x
    x = 63,441.89/276.62
  6. Step 6: Final answer
    x = 229.34

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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.