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Finding the Third Proportional to 379.69 and 793.55

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Solution

The third proportional to 379.69 and 793.55 is: 1,658.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.69 : 793.55 = 793.55 : x
  2. Step 2: Convert to fraction form
    379.69/793.55 = 793.55/x
  3. Step 3: Cross multiply
    379.69x = 793.55 × 793.55
  4. Step 4: Simplify right side
    379.69x = 629,716.64
  5. Step 5: Solve for x
    x = 629,716.64/379.69
  6. Step 6: Final answer
    x = 1,658.51

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.