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Finding the Third Proportional to 629.25 and 939

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Solution

The third proportional to 629.25 and 939 is: 1,401.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.25 : 939 = 939 : x
  2. Step 2: Convert to fraction form
    629.25/939 = 939/x
  3. Step 3: Cross multiply
    629.25x = 939 × 939
  4. Step 4: Simplify right side
    629.25x = 881,721
  5. Step 5: Solve for x
    x = 881,721/629.25
  6. Step 6: Final answer
    x = 1,401.23

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.