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Finding the Fourth Proportional to 227.20, 340.88 and 210.88

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Solution

The fourth proportional to 227.20, 340.88 and 210.88 is: 316.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.20 : 340.88 = 210.88 : x
  2. Step 2: Convert to fraction form
    227.20/340.88 = 210.88/x
  3. Step 3: Cross multiply
    227.20x = 340.88 × 210.88
  4. Step 4: Simplify right side
    227.20x = 71,884.77
  5. Step 5: Solve for x
    x = 71,884.77/227.20
  6. Step 6: Final answer
    x = 316.39

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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.