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Finding the Fourth Proportional to 481.24, 721.56 and 238.16

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Solution

The fourth proportional to 481.24, 721.56 and 238.16 is: 357.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.24 : 721.56 = 238.16 : x
  2. Step 2: Convert to fraction form
    481.24/721.56 = 238.16/x
  3. Step 3: Cross multiply
    481.24x = 721.56 × 238.16
  4. Step 4: Simplify right side
    481.24x = 171,846.73
  5. Step 5: Solve for x
    x = 171,846.73/481.24
  6. Step 6: Final answer
    x = 357.09

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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.