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Finding the Third Proportional to 486 and 632

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Solution

The third proportional to 486 and 632 is: 821.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    486 : 632 = 632 : x
  2. Step 2: Convert to fraction form
    486/632 = 632/x
  3. Step 3: Cross multiply
    486x = 632 × 632
  4. Step 4: Simplify right side
    486x = 399,424
  5. Step 5: Solve for x
    x = 399,424/486
  6. Step 6: Final answer
    x = 821.86

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These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.