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Finding the Third Proportional to 98.44 and 138.84

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Solution

The third proportional to 98.44 and 138.84 is: 195.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    98.44 : 138.84 = 138.84 : x
  2. Step 2: Convert to fraction form
    98.44/138.84 = 138.84/x
  3. Step 3: Cross multiply
    98.44x = 138.84 × 138.84
  4. Step 4: Simplify right side
    98.44x = 19,277.59
  5. Step 5: Solve for x
    x = 19,277.59/98.44
  6. Step 6: Final answer
    x = 195.84

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.