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Finding the Fourth Proportional to 227.58, 341.28 and 105.90

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Solution

The fourth proportional to 227.58, 341.28 and 105.90 is: 158.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.58 : 341.28 = 105.90 : x
  2. Step 2: Convert to fraction form
    227.58/341.28 = 105.90/x
  3. Step 3: Cross multiply
    227.58x = 341.28 × 105.90
  4. Step 4: Simplify right side
    227.58x = 36,141.55
  5. Step 5: Solve for x
    x = 36,141.55/227.58
  6. Step 6: Final answer
    x = 158.81

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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.