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Finding the Fourth Proportional to 276.48, 379.44 and 271.68

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Solution

The fourth proportional to 276.48, 379.44 and 271.68 is: 372.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.48 : 379.44 = 271.68 : x
  2. Step 2: Convert to fraction form
    276.48/379.44 = 271.68/x
  3. Step 3: Cross multiply
    276.48x = 379.44 × 271.68
  4. Step 4: Simplify right side
    276.48x = 103,086.26
  5. Step 5: Solve for x
    x = 103,086.26/276.48
  6. Step 6: Final answer
    x = 372.85

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.