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Finding the Fourth Proportional to 348.55, 481.27 and 215.96

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Solution

The fourth proportional to 348.55, 481.27 and 215.96 is: 298.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.55 : 481.27 = 215.96 : x
  2. Step 2: Convert to fraction form
    348.55/481.27 = 215.96/x
  3. Step 3: Cross multiply
    348.55x = 481.27 × 215.96
  4. Step 4: Simplify right side
    348.55x = 103,934.53
  5. Step 5: Solve for x
    x = 103,934.53/348.55
  6. Step 6: Final answer
    x = 298.20

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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.