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Finding the Third Proportional to 55.55 and 87.96

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Solution

The third proportional to 55.55 and 87.96 is: 139.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    55.55 : 87.96 = 87.96 : x
  2. Step 2: Convert to fraction form
    55.55/87.96 = 87.96/x
  3. Step 3: Cross multiply
    55.55x = 87.96 × 87.96
  4. Step 4: Simplify right side
    55.55x = 7,737.13
  5. Step 5: Solve for x
    x = 7,737.13/55.55
  6. Step 6: Final answer
    x = 139.29

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.