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Finding the Third Proportional to 17.50 and 36.50

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Solution

The third proportional to 17.50 and 36.50 is: 76.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.50 : 36.50 = 36.50 : x
  2. Step 2: Convert to fraction form
    17.50/36.50 = 36.50/x
  3. Step 3: Cross multiply
    17.50x = 36.50 × 36.50
  4. Step 4: Simplify right side
    17.50x = 1,332.25
  5. Step 5: Solve for x
    x = 1,332.25/17.50
  6. Step 6: Final answer
    x = 76.13

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.