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Finding the Fourth Proportional to 252.81, 349.02 and 159.66

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Solution

The fourth proportional to 252.81, 349.02 and 159.66 is: 220.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    252.81 : 349.02 = 159.66 : x
  2. Step 2: Convert to fraction form
    252.81/349.02 = 159.66/x
  3. Step 3: Cross multiply
    252.81x = 349.02 × 159.66
  4. Step 4: Simplify right side
    252.81x = 55,724.53
  5. Step 5: Solve for x
    x = 55,724.53/252.81
  6. Step 6: Final answer
    x = 220.42

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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.