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Finding the Third Proportional to 179.75 and 198.25

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Solution

The third proportional to 179.75 and 198.25 is: 218.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.75 : 198.25 = 198.25 : x
  2. Step 2: Convert to fraction form
    179.75/198.25 = 198.25/x
  3. Step 3: Cross multiply
    179.75x = 198.25 × 198.25
  4. Step 4: Simplify right side
    179.75x = 39,303.06
  5. Step 5: Solve for x
    x = 39,303.06/179.75
  6. Step 6: Final answer
    x = 218.65

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Why These Related Problems?

These problems maintain the same ratio (1.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.