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Finding the Fourth Proportional to 18.32, 25.38 and 18.06

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Solution

The fourth proportional to 18.32, 25.38 and 18.06 is: 25.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18.32 : 25.38 = 18.06 : x
  2. Step 2: Convert to fraction form
    18.32/25.38 = 18.06/x
  3. Step 3: Cross multiply
    18.32x = 25.38 × 18.06
  4. Step 4: Simplify right side
    18.32x = 458.36
  5. Step 5: Solve for x
    x = 458.36/18.32
  6. Step 6: Final answer
    x = 25.02

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.