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Finding the Fourth Proportional to 399.28, 551.00 and 241.99

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Solution

The fourth proportional to 399.28, 551.00 and 241.99 is: 333.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    399.28 : 551.00 = 241.99 : x
  2. Step 2: Convert to fraction form
    399.28/551.00 = 241.99/x
  3. Step 3: Cross multiply
    399.28x = 551.00 × 241.99
  4. Step 4: Simplify right side
    399.28x = 133,335.72
  5. Step 5: Solve for x
    x = 133,335.72/399.28
  6. Step 6: Final answer
    x = 333.94

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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.