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Finding the Fourth Proportional to 226.08, 311.72 and 192.88

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Solution

The fourth proportional to 226.08, 311.72 and 192.88 is: 265.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.08 : 311.72 = 192.88 : x
  2. Step 2: Convert to fraction form
    226.08/311.72 = 192.88/x
  3. Step 3: Cross multiply
    226.08x = 311.72 × 192.88
  4. Step 4: Simplify right side
    226.08x = 60,124.55
  5. Step 5: Solve for x
    x = 60,124.55/226.08
  6. Step 6: Final answer
    x = 265.94

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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.