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Finding the Third Proportional to 197.50 and 286.25

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Solution

The third proportional to 197.50 and 286.25 is: 414.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    197.50 : 286.25 = 286.25 : x
  2. Step 2: Convert to fraction form
    197.50/286.25 = 286.25/x
  3. Step 3: Cross multiply
    197.50x = 286.25 × 286.25
  4. Step 4: Simplify right side
    197.50x = 81,939.06
  5. Step 5: Solve for x
    x = 81,939.06/197.50
  6. Step 6: Final answer
    x = 414.88

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.