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Finding the Fourth Proportional to 159.91, 238.52 and 133.94

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Solution

The fourth proportional to 159.91, 238.52 and 133.94 is: 199.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.91 : 238.52 = 133.94 : x
  2. Step 2: Convert to fraction form
    159.91/238.52 = 133.94/x
  3. Step 3: Cross multiply
    159.91x = 238.52 × 133.94
  4. Step 4: Simplify right side
    159.91x = 31,948.30
  5. Step 5: Solve for x
    x = 31,948.30/159.91
  6. Step 6: Final answer
    x = 199.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.