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Finding the Fourth Proportional to 218.88, 301.84 and 199.26

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Solution

The fourth proportional to 218.88, 301.84 and 199.26 is: 274.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    218.88 : 301.84 = 199.26 : x
  2. Step 2: Convert to fraction form
    218.88/301.84 = 199.26/x
  3. Step 3: Cross multiply
    218.88x = 301.84 × 199.26
  4. Step 4: Simplify right side
    218.88x = 60,144.64
  5. Step 5: Solve for x
    x = 60,144.64/218.88
  6. Step 6: Final answer
    x = 274.78

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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.