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Finding the Fourth Proportional to 239.44, 357.06 and 231.12

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Solution

The fourth proportional to 239.44, 357.06 and 231.12 is: 344.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.44 : 357.06 = 231.12 : x
  2. Step 2: Convert to fraction form
    239.44/357.06 = 231.12/x
  3. Step 3: Cross multiply
    239.44x = 357.06 × 231.12
  4. Step 4: Simplify right side
    239.44x = 82,523.71
  5. Step 5: Solve for x
    x = 82,523.71/239.44
  6. Step 6: Final answer
    x = 344.65

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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.