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Finding the Fourth Proportional to 276.92, 381.20 and 273.68

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Solution

The fourth proportional to 276.92, 381.20 and 273.68 is: 376.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.92 : 381.20 = 273.68 : x
  2. Step 2: Convert to fraction form
    276.92/381.20 = 273.68/x
  3. Step 3: Cross multiply
    276.92x = 381.20 × 273.68
  4. Step 4: Simplify right side
    276.92x = 104,326.82
  5. Step 5: Solve for x
    x = 104,326.82/276.92
  6. Step 6: Final answer
    x = 376.74

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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.