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Finding the Fourth Proportional to 163.96, 226.32 and 131.44

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Solution

The fourth proportional to 163.96, 226.32 and 131.44 is: 181.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    163.96 : 226.32 = 131.44 : x
  2. Step 2: Convert to fraction form
    163.96/226.32 = 131.44/x
  3. Step 3: Cross multiply
    163.96x = 226.32 × 131.44
  4. Step 4: Simplify right side
    163.96x = 29,747.50
  5. Step 5: Solve for x
    x = 29,747.50/163.96
  6. Step 6: Final answer
    x = 181.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.