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Finding the Fourth Proportional to 319.88, 441.42 and 254.24

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Solution

The fourth proportional to 319.88, 441.42 and 254.24 is: 350.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    319.88 : 441.42 = 254.24 : x
  2. Step 2: Convert to fraction form
    319.88/441.42 = 254.24/x
  3. Step 3: Cross multiply
    319.88x = 441.42 × 254.24
  4. Step 4: Simplify right side
    319.88x = 112,226.62
  5. Step 5: Solve for x
    x = 112,226.62/319.88
  6. Step 6: Final answer
    x = 350.84

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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.