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Finding the Third Proportional to 141.84 and 220.88

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Solution

The third proportional to 141.84 and 220.88 is: 343.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.84 : 220.88 = 220.88 : x
  2. Step 2: Convert to fraction form
    141.84/220.88 = 220.88/x
  3. Step 3: Cross multiply
    141.84x = 220.88 × 220.88
  4. Step 4: Simplify right side
    141.84x = 48,785.77
  5. Step 5: Solve for x
    x = 48,785.77/141.84
  6. Step 6: Final answer
    x = 343.94

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.