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Finding the Fourth Proportional to 276.87, 381.43 and 193.83

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Solution

The fourth proportional to 276.87, 381.43 and 193.83 is: 267.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.87 : 381.43 = 193.83 : x
  2. Step 2: Convert to fraction form
    276.87/381.43 = 193.83/x
  3. Step 3: Cross multiply
    276.87x = 381.43 × 193.83
  4. Step 4: Simplify right side
    276.87x = 73,932.58
  5. Step 5: Solve for x
    x = 73,932.58/276.87
  6. Step 6: Final answer
    x = 267.03

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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.