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Finding the Third Proportional to 4 and 17

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Solution

The third proportional to 4 and 17 is: 72.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4 : 17 = 17 : x
  2. Step 2: Convert to fraction form
    4/17 = 17/x
  3. Step 3: Cross multiply
    4x = 17 × 17
  4. Step 4: Simplify right side
    4x = 289
  5. Step 5: Solve for x
    x = 289/4
  6. Step 6: Final answer
    x = 72.25

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Why These Related Problems?

These problems maintain the same ratio (4.25) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.