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Finding the Fourth Proportional to 25.88, 39.04 and 25.25

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Solution

The fourth proportional to 25.88, 39.04 and 25.25 is: 38.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    25.88 : 39.04 = 25.25 : x
  2. Step 2: Convert to fraction form
    25.88/39.04 = 25.25/x
  3. Step 3: Cross multiply
    25.88x = 39.04 × 25.25
  4. Step 4: Simplify right side
    25.88x = 985.50
  5. Step 5: Solve for x
    x = 985.50/25.88
  6. Step 6: Final answer
    x = 38.09

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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.