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Finding the Third Proportional to 17.50 and 26.25

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Solution

The third proportional to 17.50 and 26.25 is: 39.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.50 : 26.25 = 26.25 : x
  2. Step 2: Convert to fraction form
    17.50/26.25 = 26.25/x
  3. Step 3: Cross multiply
    17.50x = 26.25 × 26.25
  4. Step 4: Simplify right side
    17.50x = 689.06
  5. Step 5: Solve for x
    x = 689.06/17.50
  6. Step 6: Final answer
    x = 39.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.