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Finding the Fourth Proportional to 227.56, 313.94 and 158.60

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Solution

The fourth proportional to 227.56, 313.94 and 158.60 is: 218.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.56 : 313.94 = 158.60 : x
  2. Step 2: Convert to fraction form
    227.56/313.94 = 158.60/x
  3. Step 3: Cross multiply
    227.56x = 313.94 × 158.60
  4. Step 4: Simplify right side
    227.56x = 49,790.88
  5. Step 5: Solve for x
    x = 49,790.88/227.56
  6. Step 6: Final answer
    x = 218.80

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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.