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Finding the Fourth Proportional to 16.97, 25.61 and 16.79

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Solution

The fourth proportional to 16.97, 25.61 and 16.79 is: 25.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.97 : 25.61 = 16.79 : x
  2. Step 2: Convert to fraction form
    16.97/25.61 = 16.79/x
  3. Step 3: Cross multiply
    16.97x = 25.61 × 16.79
  4. Step 4: Simplify right side
    16.97x = 429.78
  5. Step 5: Solve for x
    x = 429.78/16.97
  6. Step 6: Final answer
    x = 25.33

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.