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Finding the Fourth Proportional to 281.24, 387.42 and 234.56

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Solution

The fourth proportional to 281.24, 387.42 and 234.56 is: 323.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    281.24 : 387.42 = 234.56 : x
  2. Step 2: Convert to fraction form
    281.24/387.42 = 234.56/x
  3. Step 3: Cross multiply
    281.24x = 387.42 × 234.56
  4. Step 4: Simplify right side
    281.24x = 90,873.24
  5. Step 5: Solve for x
    x = 90,873.24/281.24
  6. Step 6: Final answer
    x = 323.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.