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Finding the Fourth Proportional to 911.42, 1,367.13 and 227.42

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Solution

The fourth proportional to 911.42, 1,367.13 and 227.42 is: 341.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    911.42 : 1,367.13 = 227.42 : x
  2. Step 2: Convert to fraction form
    911.42/1,367.13 = 227.42/x
  3. Step 3: Cross multiply
    911.42x = 1,367.13 × 227.42
  4. Step 4: Simplify right side
    911.42x = 310,912.70
  5. Step 5: Solve for x
    x = 310,912.70/911.42
  6. Step 6: Final answer
    x = 341.13

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Double scale
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Similar ratio
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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.