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Finding the Fourth Proportional to 447.96, 618.18 and 251.49

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Solution

The fourth proportional to 447.96, 618.18 and 251.49 is: 347.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.96 : 618.18 = 251.49 : x
  2. Step 2: Convert to fraction form
    447.96/618.18 = 251.49/x
  3. Step 3: Cross multiply
    447.96x = 618.18 × 251.49
  4. Step 4: Simplify right side
    447.96x = 155,466.09
  5. Step 5: Solve for x
    x = 155,466.09/447.96
  6. Step 6: Final answer
    x = 347.05

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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.