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Finding the Third Proportional to 512.63 and 625.13

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Solution

The third proportional to 512.63 and 625.13 is: 762.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    512.63 : 625.13 = 625.13 : x
  2. Step 2: Convert to fraction form
    512.63/625.13 = 625.13/x
  3. Step 3: Cross multiply
    512.63x = 625.13 × 625.13
  4. Step 4: Simplify right side
    512.63x = 390,781.27
  5. Step 5: Solve for x
    x = 390,781.27/512.63
  6. Step 6: Final answer
    x = 762.31

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Why These Related Problems?

These problems maintain the same ratio (1.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.