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Finding the Third Proportional to 629.75 and 945.25

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Solution

The third proportional to 629.75 and 945.25 is: 1,418.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.75 : 945.25 = 945.25 : x
  2. Step 2: Convert to fraction form
    629.75/945.25 = 945.25/x
  3. Step 3: Cross multiply
    629.75x = 945.25 × 945.25
  4. Step 4: Simplify right side
    629.75x = 893,497.56
  5. Step 5: Solve for x
    x = 893,497.56/629.75
  6. Step 6: Final answer
    x = 1,418.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.