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Finding the Third Proportional to 53.16 and 108.42

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Solution

The third proportional to 53.16 and 108.42 is: 221.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    53.16 : 108.42 = 108.42 : x
  2. Step 2: Convert to fraction form
    53.16/108.42 = 108.42/x
  3. Step 3: Cross multiply
    53.16x = 108.42 × 108.42
  4. Step 4: Simplify right side
    53.16x = 11,755.39
  5. Step 5: Solve for x
    x = 11,755.39/53.16
  6. Step 6: Final answer
    x = 221.13

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.