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Finding the Third Proportional to 140.03 and 276.61

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Solution

The third proportional to 140.03 and 276.61 is: 546.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.03 : 276.61 = 276.61 : x
  2. Step 2: Convert to fraction form
    140.03/276.61 = 276.61/x
  3. Step 3: Cross multiply
    140.03x = 276.61 × 276.61
  4. Step 4: Simplify right side
    140.03x = 76,512.75
  5. Step 5: Solve for x
    x = 76,512.75/140.03
  6. Step 6: Final answer
    x = 546.41

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Why These Related Problems?

These problems maintain the same ratio (1.98) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.