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Finding the Third Proportional to 5.50 and 13.75

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Solution

The third proportional to 5.50 and 13.75 is: 34.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5.50 : 13.75 = 13.75 : x
  2. Step 2: Convert to fraction form
    5.50/13.75 = 13.75/x
  3. Step 3: Cross multiply
    5.50x = 13.75 × 13.75
  4. Step 4: Simplify right side
    5.50x = 189.06
  5. Step 5: Solve for x
    x = 189.06/5.50
  6. Step 6: Final answer
    x = 34.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.