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Finding the Fourth Proportional to 227.26, 340.30 and 161.90

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Solution

The fourth proportional to 227.26, 340.30 and 161.90 is: 242.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.26 : 340.30 = 161.90 : x
  2. Step 2: Convert to fraction form
    227.26/340.30 = 161.90/x
  3. Step 3: Cross multiply
    227.26x = 340.30 × 161.90
  4. Step 4: Simplify right side
    227.26x = 55,094.57
  5. Step 5: Solve for x
    x = 55,094.57/227.26
  6. Step 6: Final answer
    x = 242.43

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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.