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Finding the Fourth Proportional to 159.58, 238.75 and 107.98

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Solution

The fourth proportional to 159.58, 238.75 and 107.98 is: 161.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.58 : 238.75 = 107.98 : x
  2. Step 2: Convert to fraction form
    159.58/238.75 = 107.98/x
  3. Step 3: Cross multiply
    159.58x = 238.75 × 107.98
  4. Step 4: Simplify right side
    159.58x = 25,780.23
  5. Step 5: Solve for x
    x = 25,780.23/159.58
  6. Step 6: Final answer
    x = 161.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.