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Finding the Fourth Proportional to 224, 335.84 and 121.28

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Solution

The fourth proportional to 224, 335.84 and 121.28 is: 181.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    224 : 335.84 = 121.28 : x
  2. Step 2: Convert to fraction form
    224/335.84 = 121.28/x
  3. Step 3: Cross multiply
    224x = 335.84 × 121.28
  4. Step 4: Simplify right side
    224x = 40,730.68
  5. Step 5: Solve for x
    x = 40,730.68/224
  6. Step 6: Final answer
    x = 181.83

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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.