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Finding the Third Proportional to 354.09 and 763.03

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Solution

The third proportional to 354.09 and 763.03 is: 1,644.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.09 : 763.03 = 763.03 : x
  2. Step 2: Convert to fraction form
    354.09/763.03 = 763.03/x
  3. Step 3: Cross multiply
    354.09x = 763.03 × 763.03
  4. Step 4: Simplify right side
    354.09x = 582,216.69
  5. Step 5: Solve for x
    x = 582,216.69/354.09
  6. Step 6: Final answer
    x = 1,644.24

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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.