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Finding the Fourth Proportional to 343.46, 474.20 and 254.96

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Solution

The fourth proportional to 343.46, 474.20 and 254.96 is: 352.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.46 : 474.20 = 254.96 : x
  2. Step 2: Convert to fraction form
    343.46/474.20 = 254.96/x
  3. Step 3: Cross multiply
    343.46x = 474.20 × 254.96
  4. Step 4: Simplify right side
    343.46x = 120,902.03
  5. Step 5: Solve for x
    x = 120,902.03/343.46
  6. Step 6: Final answer
    x = 352.01

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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.