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Finding the Fourth Proportional to 18.23, 27.36 and 12.23

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Solution

The fourth proportional to 18.23, 27.36 and 12.23 is: 18.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18.23 : 27.36 = 12.23 : x
  2. Step 2: Convert to fraction form
    18.23/27.36 = 12.23/x
  3. Step 3: Cross multiply
    18.23x = 27.36 × 12.23
  4. Step 4: Simplify right side
    18.23x = 334.61
  5. Step 5: Solve for x
    x = 334.61/18.23
  6. Step 6: Final answer
    x = 18.36

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.