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Finding the Fourth Proportional to 25.31, 34.91 and 17.11

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Solution

The fourth proportional to 25.31, 34.91 and 17.11 is: 23.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    25.31 : 34.91 = 17.11 : x
  2. Step 2: Convert to fraction form
    25.31/34.91 = 17.11/x
  3. Step 3: Cross multiply
    25.31x = 34.91 × 17.11
  4. Step 4: Simplify right side
    25.31x = 597.31
  5. Step 5: Solve for x
    x = 597.31/25.31
  6. Step 6: Final answer
    x = 23.60

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.