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Finding the Fourth Proportional to 227.19, 340.61 and 105.39

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Solution

The fourth proportional to 227.19, 340.61 and 105.39 is: 158.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.19 : 340.61 = 105.39 : x
  2. Step 2: Convert to fraction form
    227.19/340.61 = 105.39/x
  3. Step 3: Cross multiply
    227.19x = 340.61 × 105.39
  4. Step 4: Simplify right side
    227.19x = 35,896.36
  5. Step 5: Solve for x
    x = 35,896.36/227.19
  6. Step 6: Final answer
    x = 158.00

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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.