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Finding the Fourth Proportional to 227.70, 343.26 and 212.04

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Solution

The fourth proportional to 227.70, 343.26 and 212.04 is: 319.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.70 : 343.26 = 212.04 : x
  2. Step 2: Convert to fraction form
    227.70/343.26 = 212.04/x
  3. Step 3: Cross multiply
    227.70x = 343.26 × 212.04
  4. Step 4: Simplify right side
    227.70x = 72,784.85
  5. Step 5: Solve for x
    x = 72,784.85/227.70
  6. Step 6: Final answer
    x = 319.65

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.