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Finding the Fourth Proportional to 247.12, 369.92 and 222.64

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Solution

The fourth proportional to 247.12, 369.92 and 222.64 is: 333.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.12 : 369.92 = 222.64 : x
  2. Step 2: Convert to fraction form
    247.12/369.92 = 222.64/x
  3. Step 3: Cross multiply
    247.12x = 369.92 × 222.64
  4. Step 4: Simplify right side
    247.12x = 82,358.99
  5. Step 5: Solve for x
    x = 82,358.99/247.12
  6. Step 6: Final answer
    x = 333.28

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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.