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Finding the Third Proportional to 276.25 and 629.94

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Solution

The third proportional to 276.25 and 629.94 is: 1,436.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.25 : 629.94 = 629.94 : x
  2. Step 2: Convert to fraction form
    276.25/629.94 = 629.94/x
  3. Step 3: Cross multiply
    276.25x = 629.94 × 629.94
  4. Step 4: Simplify right side
    276.25x = 396,821.25
  5. Step 5: Solve for x
    x = 396,821.25/276.25
  6. Step 6: Final answer
    x = 1,436.46

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Why These Related Problems?

These problems maintain the same ratio (2.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.