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Finding the Fourth Proportional to 348.92, 481.48 and 216.20

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Solution

The fourth proportional to 348.92, 481.48 and 216.20 is: 298.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.92 : 481.48 = 216.20 : x
  2. Step 2: Convert to fraction form
    348.92/481.48 = 216.20/x
  3. Step 3: Cross multiply
    348.92x = 481.48 × 216.20
  4. Step 4: Simplify right side
    348.92x = 104,095.98
  5. Step 5: Solve for x
    x = 104,095.98/348.92
  6. Step 6: Final answer
    x = 298.34

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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.