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Finding the Fourth Proportional to 343.26, 474.15 and 254.94

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Solution

The fourth proportional to 343.26, 474.15 and 254.94 is: 352.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.26 : 474.15 = 254.94 : x
  2. Step 2: Convert to fraction form
    343.26/474.15 = 254.94/x
  3. Step 3: Cross multiply
    343.26x = 474.15 × 254.94
  4. Step 4: Simplify right side
    343.26x = 120,879.80
  5. Step 5: Solve for x
    x = 120,879.80/343.26
  6. Step 6: Final answer
    x = 352.15

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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.