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Finding the Third Proportional to 535.78 and 814.97

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Solution

The third proportional to 535.78 and 814.97 is: 1,239.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.78 : 814.97 = 814.97 : x
  2. Step 2: Convert to fraction form
    535.78/814.97 = 814.97/x
  3. Step 3: Cross multiply
    535.78x = 814.97 × 814.97
  4. Step 4: Simplify right side
    535.78x = 664,174.06
  5. Step 5: Solve for x
    x = 664,174.06/535.78
  6. Step 6: Final answer
    x = 1,239.64

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.