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Finding the Third Proportional to 55.88 and 86.35

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Solution

The third proportional to 55.88 and 86.35 is: 133.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    55.88 : 86.35 = 86.35 : x
  2. Step 2: Convert to fraction form
    55.88/86.35 = 86.35/x
  3. Step 3: Cross multiply
    55.88x = 86.35 × 86.35
  4. Step 4: Simplify right side
    55.88x = 7,456.76
  5. Step 5: Solve for x
    x = 7,456.76/55.88
  6. Step 6: Final answer
    x = 133.44

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.