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Finding the Fourth Proportional to 25.67, 38.42 and 18.04

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Solution

The fourth proportional to 25.67, 38.42 and 18.04 is: 27.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    25.67 : 38.42 = 18.04 : x
  2. Step 2: Convert to fraction form
    25.67/38.42 = 18.04/x
  3. Step 3: Cross multiply
    25.67x = 38.42 × 18.04
  4. Step 4: Simplify right side
    25.67x = 693.10
  5. Step 5: Solve for x
    x = 693.10/25.67
  6. Step 6: Final answer
    x = 27.00

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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.