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Finding the Third Proportional to 218.32 and 464.17

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Solution

The third proportional to 218.32 and 464.17 is: 986.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    218.32 : 464.17 = 464.17 : x
  2. Step 2: Convert to fraction form
    218.32/464.17 = 464.17/x
  3. Step 3: Cross multiply
    218.32x = 464.17 × 464.17
  4. Step 4: Simplify right side
    218.32x = 215,451.90
  5. Step 5: Solve for x
    x = 215,451.90/218.32
  6. Step 6: Final answer
    x = 986.86

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.