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Finding the Fourth Proportional to 399.25, 551 and 244.03

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Solution

The fourth proportional to 399.25, 551 and 244.03 is: 336.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    399.25 : 551 = 244.03 : x
  2. Step 2: Convert to fraction form
    399.25/551 = 244.03/x
  3. Step 3: Cross multiply
    399.25x = 551 × 244.03
  4. Step 4: Simplify right side
    399.25x = 134,460.53
  5. Step 5: Solve for x
    x = 134,460.53/399.25
  6. Step 6: Final answer
    x = 336.78

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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.