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Finding the Fourth Proportional to 223.12, 335.28 and 131.92

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Solution

The fourth proportional to 223.12, 335.28 and 131.92 is: 198.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.12 : 335.28 = 131.92 : x
  2. Step 2: Convert to fraction form
    223.12/335.28 = 131.92/x
  3. Step 3: Cross multiply
    223.12x = 335.28 × 131.92
  4. Step 4: Simplify right side
    223.12x = 44,230.14
  5. Step 5: Solve for x
    x = 44,230.14/223.12
  6. Step 6: Final answer
    x = 198.23

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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.