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Finding the Fourth Proportional to 227.60, 313.84 and 194.88

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Solution

The fourth proportional to 227.60, 313.84 and 194.88 is: 268.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.60 : 313.84 = 194.88 : x
  2. Step 2: Convert to fraction form
    227.60/313.84 = 194.88/x
  3. Step 3: Cross multiply
    227.60x = 313.84 × 194.88
  4. Step 4: Simplify right side
    227.60x = 61,161.14
  5. Step 5: Solve for x
    x = 61,161.14/227.60
  6. Step 6: Final answer
    x = 268.72

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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.