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Finding the Fourth Proportional to 398.72, 550.01 and 241.40

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Solution

The fourth proportional to 398.72, 550.01 and 241.40 is: 332.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.72 : 550.01 = 241.40 : x
  2. Step 2: Convert to fraction form
    398.72/550.01 = 241.40/x
  3. Step 3: Cross multiply
    398.72x = 550.01 × 241.40
  4. Step 4: Simplify right side
    398.72x = 132,768.46
  5. Step 5: Solve for x
    x = 132,768.46/398.72
  6. Step 6: Final answer
    x = 332.99

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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.