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Finding the Third Proportional to 676.38 and 1,021.88

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Solution

The third proportional to 676.38 and 1,021.88 is: 1,543.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    676.38 : 1,021.88 = 1,021.88 : x
  2. Step 2: Convert to fraction form
    676.38/1,021.88 = 1,021.88/x
  3. Step 3: Cross multiply
    676.38x = 1,021.88 × 1,021.88
  4. Step 4: Simplify right side
    676.38x = 1,044,228.52
  5. Step 5: Solve for x
    x = 1,044,228.52/676.38
  6. Step 6: Final answer
    x = 1,543.86

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.