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Finding the Fourth Proportional to 276.71, 381.89 and 166.25

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Solution

The fourth proportional to 276.71, 381.89 and 166.25 is: 229.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.71 : 381.89 = 166.25 : x
  2. Step 2: Convert to fraction form
    276.71/381.89 = 166.25/x
  3. Step 3: Cross multiply
    276.71x = 381.89 × 166.25
  4. Step 4: Simplify right side
    276.71x = 63,489.21
  5. Step 5: Solve for x
    x = 63,489.21/276.71
  6. Step 6: Final answer
    x = 229.44

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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.