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Finding the Third Proportional to 324.38 and 697.88

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Solution

The third proportional to 324.38 and 697.88 is: 1,501.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.38 : 697.88 = 697.88 : x
  2. Step 2: Convert to fraction form
    324.38/697.88 = 697.88/x
  3. Step 3: Cross multiply
    324.38x = 697.88 × 697.88
  4. Step 4: Simplify right side
    324.38x = 487,029.52
  5. Step 5: Solve for x
    x = 487,029.52/324.38
  6. Step 6: Final answer
    x = 1,501.44

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.