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Finding the Third Proportional to 143.33 and 197.91

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Solution

The third proportional to 143.33 and 197.91 is: 273.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    143.33 : 197.91 = 197.91 : x
  2. Step 2: Convert to fraction form
    143.33/197.91 = 197.91/x
  3. Step 3: Cross multiply
    143.33x = 197.91 × 197.91
  4. Step 4: Simplify right side
    143.33x = 39,169.20
  5. Step 5: Solve for x
    x = 39,169.20/143.33
  6. Step 6: Final answer
    x = 273.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.