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Finding the Third Proportional to 382.50 and 512.44

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Solution

The third proportional to 382.50 and 512.44 is: 686.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    382.50 : 512.44 = 512.44 : x
  2. Step 2: Convert to fraction form
    382.50/512.44 = 512.44/x
  3. Step 3: Cross multiply
    382.50x = 512.44 × 512.44
  4. Step 4: Simplify right side
    382.50x = 262,592.19
  5. Step 5: Solve for x
    x = 262,592.19/382.50
  6. Step 6: Final answer
    x = 686.52

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.