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Finding the Third Proportional to 394.38 and 775.25

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Solution

The third proportional to 394.38 and 775.25 is: 1,523.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.38 : 775.25 = 775.25 : x
  2. Step 2: Convert to fraction form
    394.38/775.25 = 775.25/x
  3. Step 3: Cross multiply
    394.38x = 775.25 × 775.25
  4. Step 4: Simplify right side
    394.38x = 601,012.56
  5. Step 5: Solve for x
    x = 601,012.56/394.38
  6. Step 6: Final answer
    x = 1,523.96

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Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.