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Finding the Third Proportional to 393.94 and 452.34

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Solution

The third proportional to 393.94 and 452.34 is: 519.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    393.94 : 452.34 = 452.34 : x
  2. Step 2: Convert to fraction form
    393.94/452.34 = 452.34/x
  3. Step 3: Cross multiply
    393.94x = 452.34 × 452.34
  4. Step 4: Simplify right side
    393.94x = 204,614.87
  5. Step 5: Solve for x
    x = 204,614.87/393.94
  6. Step 6: Final answer
    x = 519.41

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Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.