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Finding the Third Proportional to 137.50 and 302

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Solution

The third proportional to 137.50 and 302 is: 663.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    137.50 : 302 = 302 : x
  2. Step 2: Convert to fraction form
    137.50/302 = 302/x
  3. Step 3: Cross multiply
    137.50x = 302 × 302
  4. Step 4: Simplify right side
    137.50x = 91,204
  5. Step 5: Solve for x
    x = 91,204/137.50
  6. Step 6: Final answer
    x = 663.30

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.