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Finding the Fourth Proportional to 418.03, 576.87 and 243.37

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Solution

The fourth proportional to 418.03, 576.87 and 243.37 is: 335.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    418.03 : 576.87 = 243.37 : x
  2. Step 2: Convert to fraction form
    418.03/576.87 = 243.37/x
  3. Step 3: Cross multiply
    418.03x = 576.87 × 243.37
  4. Step 4: Simplify right side
    418.03x = 140,392.85
  5. Step 5: Solve for x
    x = 140,392.85/418.03
  6. Step 6: Final answer
    x = 335.84

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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.