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Finding the Fourth Proportional to 179.82, 247.55 and 157.98

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Solution

The fourth proportional to 179.82, 247.55 and 157.98 is: 217.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.82 : 247.55 = 157.98 : x
  2. Step 2: Convert to fraction form
    179.82/247.55 = 157.98/x
  3. Step 3: Cross multiply
    179.82x = 247.55 × 157.98
  4. Step 4: Simplify right side
    179.82x = 39,107.95
  5. Step 5: Solve for x
    x = 39,107.95/179.82
  6. Step 6: Final answer
    x = 217.48

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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.