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Finding the Third Proportional to 355.13 and 763.50

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Solution

The third proportional to 355.13 and 763.50 is: 1,641.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.13 : 763.50 = 763.50 : x
  2. Step 2: Convert to fraction form
    355.13/763.50 = 763.50/x
  3. Step 3: Cross multiply
    355.13x = 763.50 × 763.50
  4. Step 4: Simplify right side
    355.13x = 582,932.25
  5. Step 5: Solve for x
    x = 582,932.25/355.13
  6. Step 6: Final answer
    x = 1,641.48

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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.