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Finding the Third Proportional to 89.75 and 136.44

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Solution

The third proportional to 89.75 and 136.44 is: 207.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    89.75 : 136.44 = 136.44 : x
  2. Step 2: Convert to fraction form
    89.75/136.44 = 136.44/x
  3. Step 3: Cross multiply
    89.75x = 136.44 × 136.44
  4. Step 4: Simplify right side
    89.75x = 18,615.19
  5. Step 5: Solve for x
    x = 18,615.19/89.75
  6. Step 6: Final answer
    x = 207.41

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.