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Finding the Third Proportional to 517.50 and 793.13

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Solution

The third proportional to 517.50 and 793.13 is: 1,215.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.50 : 793.13 = 793.13 : x
  2. Step 2: Convert to fraction form
    517.50/793.13 = 793.13/x
  3. Step 3: Cross multiply
    517.50x = 793.13 × 793.13
  4. Step 4: Simplify right side
    517.50x = 629,047.27
  5. Step 5: Solve for x
    x = 629,047.27/517.50
  6. Step 6: Final answer
    x = 1,215.55

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.