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Finding the Third Proportional to 56.11 and 88.17

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Solution

The third proportional to 56.11 and 88.17 is: 138.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    56.11 : 88.17 = 88.17 : x
  2. Step 2: Convert to fraction form
    56.11/88.17 = 88.17/x
  3. Step 3: Cross multiply
    56.11x = 88.17 × 88.17
  4. Step 4: Simplify right side
    56.11x = 7,774.28
  5. Step 5: Solve for x
    x = 7,774.28/56.11
  6. Step 6: Final answer
    x = 138.56

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.