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Finding the Fourth Proportional to 17.31, 25.94 and 17.12

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Solution

The fourth proportional to 17.31, 25.94 and 17.12 is: 25.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.31 : 25.94 = 17.12 : x
  2. Step 2: Convert to fraction form
    17.31/25.94 = 17.12/x
  3. Step 3: Cross multiply
    17.31x = 25.94 × 17.12
  4. Step 4: Simplify right side
    17.31x = 444.05
  5. Step 5: Solve for x
    x = 444.05/17.31
  6. Step 6: Final answer
    x = 25.66

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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.