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Finding the Fourth Proportional to 231.18, 344.68 and 227.07

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Solution

The fourth proportional to 231.18, 344.68 and 227.07 is: 338.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    231.18 : 344.68 = 227.07 : x
  2. Step 2: Convert to fraction form
    231.18/344.68 = 227.07/x
  3. Step 3: Cross multiply
    231.18x = 344.68 × 227.07
  4. Step 4: Simplify right side
    231.18x = 78,266.49
  5. Step 5: Solve for x
    x = 78,266.49/231.18
  6. Step 6: Final answer
    x = 338.55

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.