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Finding the Fourth Proportional to 348.56, 481.18 and 235.20

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Solution

The fourth proportional to 348.56, 481.18 and 235.20 is: 324.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.56 : 481.18 = 235.20 : x
  2. Step 2: Convert to fraction form
    348.56/481.18 = 235.20/x
  3. Step 3: Cross multiply
    348.56x = 481.18 × 235.20
  4. Step 4: Simplify right side
    348.56x = 113,173.54
  5. Step 5: Solve for x
    x = 113,173.54/348.56
  6. Step 6: Final answer
    x = 324.69

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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.