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Finding the Fourth Proportional to 159.59, 218.82 and 143.98

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Solution

The fourth proportional to 159.59, 218.82 and 143.98 is: 197.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.59 : 218.82 = 143.98 : x
  2. Step 2: Convert to fraction form
    159.59/218.82 = 143.98/x
  3. Step 3: Cross multiply
    159.59x = 218.82 × 143.98
  4. Step 4: Simplify right side
    159.59x = 31,505.70
  5. Step 5: Solve for x
    x = 31,505.70/159.59
  6. Step 6: Final answer
    x = 197.42

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.