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Finding the Fourth Proportional to 276.89, 381.46 and 193.85

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Solution

The fourth proportional to 276.89, 381.46 and 193.85 is: 267.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.89 : 381.46 = 193.85 : x
  2. Step 2: Convert to fraction form
    276.89/381.46 = 193.85/x
  3. Step 3: Cross multiply
    276.89x = 381.46 × 193.85
  4. Step 4: Simplify right side
    276.89x = 73,946.02
  5. Step 5: Solve for x
    x = 73,946.02/276.89
  6. Step 6: Final answer
    x = 267.06

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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.