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Finding the Third Proportional to 126.38 and 276.38

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Solution

The third proportional to 126.38 and 276.38 is: 604.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    126.38 : 276.38 = 276.38 : x
  2. Step 2: Convert to fraction form
    126.38/276.38 = 276.38/x
  3. Step 3: Cross multiply
    126.38x = 276.38 × 276.38
  4. Step 4: Simplify right side
    126.38x = 76,383.14
  5. Step 5: Solve for x
    x = 76,383.14/126.38
  6. Step 6: Final answer
    x = 604.42

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.