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Finding the Third Proportional to 488.25 and 636

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Solution

The third proportional to 488.25 and 636 is: 828.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.25 : 636 = 636 : x
  2. Step 2: Convert to fraction form
    488.25/636 = 636/x
  3. Step 3: Cross multiply
    488.25x = 636 × 636
  4. Step 4: Simplify right side
    488.25x = 404,496
  5. Step 5: Solve for x
    x = 404,496/488.25
  6. Step 6: Final answer
    x = 828.46

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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.