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Finding the Third Proportional to 129.88 and 337.94

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Solution

The third proportional to 129.88 and 337.94 is: 879.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    129.88 : 337.94 = 337.94 : x
  2. Step 2: Convert to fraction form
    129.88/337.94 = 337.94/x
  3. Step 3: Cross multiply
    129.88x = 337.94 × 337.94
  4. Step 4: Simplify right side
    129.88x = 114,201.75
  5. Step 5: Solve for x
    x = 114,201.75/129.88
  6. Step 6: Final answer
    x = 879.32

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Why These Related Problems?

These problems maintain the same ratio (2.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.