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Finding the Fourth Proportional to 335.52, 462.78 and 218.88

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Solution

The fourth proportional to 335.52, 462.78 and 218.88 is: 301.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.52 : 462.78 = 218.88 : x
  2. Step 2: Convert to fraction form
    335.52/462.78 = 218.88/x
  3. Step 3: Cross multiply
    335.52x = 462.78 × 218.88
  4. Step 4: Simplify right side
    335.52x = 101,293.29
  5. Step 5: Solve for x
    x = 101,293.29/335.52
  6. Step 6: Final answer
    x = 301.90

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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.