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Finding the Third Proportional to 494.25 and 702.25

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Solution

The third proportional to 494.25 and 702.25 is: 997.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.25 : 702.25 = 702.25 : x
  2. Step 2: Convert to fraction form
    494.25/702.25 = 702.25/x
  3. Step 3: Cross multiply
    494.25x = 702.25 × 702.25
  4. Step 4: Simplify right side
    494.25x = 493,155.06
  5. Step 5: Solve for x
    x = 493,155.06/494.25
  6. Step 6: Final answer
    x = 997.78

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.