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Finding the Fourth Proportional to 159.82, 238.56 and 148.54

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Solution

The fourth proportional to 159.82, 238.56 and 148.54 is: 221.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.82 : 238.56 = 148.54 : x
  2. Step 2: Convert to fraction form
    159.82/238.56 = 148.54/x
  3. Step 3: Cross multiply
    159.82x = 238.56 × 148.54
  4. Step 4: Simplify right side
    159.82x = 35,435.70
  5. Step 5: Solve for x
    x = 35,435.70/159.82
  6. Step 6: Final answer
    x = 221.72

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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.