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Finding the Fourth Proportional to 17.00, 25.49 and 12.47

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Solution

The fourth proportional to 17.00, 25.49 and 12.47 is: 18.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.00 : 25.49 = 12.47 : x
  2. Step 2: Convert to fraction form
    17.00/25.49 = 12.47/x
  3. Step 3: Cross multiply
    17.00x = 25.49 × 12.47
  4. Step 4: Simplify right side
    17.00x = 317.86
  5. Step 5: Solve for x
    x = 317.86/17.00
  6. Step 6: Final answer
    x = 18.70

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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.