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Finding the Fourth Proportional to 243.96, 366.12 and 163.32

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Solution

The fourth proportional to 243.96, 366.12 and 163.32 is: 245.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.96 : 366.12 = 163.32 : x
  2. Step 2: Convert to fraction form
    243.96/366.12 = 163.32/x
  3. Step 3: Cross multiply
    243.96x = 366.12 × 163.32
  4. Step 4: Simplify right side
    243.96x = 59,794.72
  5. Step 5: Solve for x
    x = 59,794.72/243.96
  6. Step 6: Final answer
    x = 245.10

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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.