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Finding the Fourth Proportional to 227.41, 313.73 and 138.83

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Solution

The fourth proportional to 227.41, 313.73 and 138.83 is: 191.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.41 : 313.73 = 138.83 : x
  2. Step 2: Convert to fraction form
    227.41/313.73 = 138.83/x
  3. Step 3: Cross multiply
    227.41x = 313.73 × 138.83
  4. Step 4: Simplify right side
    227.41x = 43,555.14
  5. Step 5: Solve for x
    x = 43,555.14/227.41
  6. Step 6: Final answer
    x = 191.53

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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.