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Finding the Third Proportional to 325.97 and 679.36

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Solution

The third proportional to 325.97 and 679.36 is: 1,415.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.97 : 679.36 = 679.36 : x
  2. Step 2: Convert to fraction form
    325.97/679.36 = 679.36/x
  3. Step 3: Cross multiply
    325.97x = 679.36 × 679.36
  4. Step 4: Simplify right side
    325.97x = 461,529.16
  5. Step 5: Solve for x
    x = 461,529.16/325.97
  6. Step 6: Final answer
    x = 1,415.87

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.