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Finding the Fourth Proportional to 26.59, 39.90 and 16.97

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Solution

The fourth proportional to 26.59, 39.90 and 16.97 is: 25.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    26.59 : 39.90 = 16.97 : x
  2. Step 2: Convert to fraction form
    26.59/39.90 = 16.97/x
  3. Step 3: Cross multiply
    26.59x = 39.90 × 16.97
  4. Step 4: Simplify right side
    26.59x = 677.10
  5. Step 5: Solve for x
    x = 677.10/26.59
  6. Step 6: Final answer
    x = 25.46

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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.