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Finding the Fourth Proportional to 348.81, 481.46 and 343.55

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Solution

The fourth proportional to 348.81, 481.46 and 343.55 is: 474.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.81 : 481.46 = 343.55 : x
  2. Step 2: Convert to fraction form
    348.81/481.46 = 343.55/x
  3. Step 3: Cross multiply
    348.81x = 481.46 × 343.55
  4. Step 4: Simplify right side
    348.81x = 165,405.58
  5. Step 5: Solve for x
    x = 165,405.58/348.81
  6. Step 6: Final answer
    x = 474.20

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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.