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Finding the Fourth Proportional to 348.98, 481.57 and 217.99

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Solution

The fourth proportional to 348.98, 481.57 and 217.99 is: 300.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.98 : 481.57 = 217.99 : x
  2. Step 2: Convert to fraction form
    348.98/481.57 = 217.99/x
  3. Step 3: Cross multiply
    348.98x = 481.57 × 217.99
  4. Step 4: Simplify right side
    348.98x = 104,977.44
  5. Step 5: Solve for x
    x = 104,977.44/348.98
  6. Step 6: Final answer
    x = 300.81

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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.