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Finding the Third Proportional to 276.88 and 363.94

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Solution

The third proportional to 276.88 and 363.94 is: 478.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.88 : 363.94 = 363.94 : x
  2. Step 2: Convert to fraction form
    276.88/363.94 = 363.94/x
  3. Step 3: Cross multiply
    276.88x = 363.94 × 363.94
  4. Step 4: Simplify right side
    276.88x = 132,450.50
  5. Step 5: Solve for x
    x = 132,450.50/276.88
  6. Step 6: Final answer
    x = 478.38

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.