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Finding the Fourth Proportional to 398.95, 550.44 and 241.67

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Solution

The fourth proportional to 398.95, 550.44 and 241.67 is: 333.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.95 : 550.44 = 241.67 : x
  2. Step 2: Convert to fraction form
    398.95/550.44 = 241.67/x
  3. Step 3: Cross multiply
    398.95x = 550.44 × 241.67
  4. Step 4: Simplify right side
    398.95x = 133,022.08
  5. Step 5: Solve for x
    x = 133,022.08/398.95
  6. Step 6: Final answer
    x = 333.43

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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.