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Finding the Fourth Proportional to 348.96, 481.48 and 217.92

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Solution

The fourth proportional to 348.96, 481.48 and 217.92 is: 300.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.96 : 481.48 = 217.92 : x
  2. Step 2: Convert to fraction form
    348.96/481.48 = 217.92/x
  3. Step 3: Cross multiply
    348.96x = 481.48 × 217.92
  4. Step 4: Simplify right side
    348.96x = 104,924.12
  5. Step 5: Solve for x
    x = 104,924.12/348.96
  6. Step 6: Final answer
    x = 300.68

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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.