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Finding the Fourth Proportional to 179.05, 247.09 and 113.67

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Solution

The fourth proportional to 179.05, 247.09 and 113.67 is: 156.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.05 : 247.09 = 113.67 : x
  2. Step 2: Convert to fraction form
    179.05/247.09 = 113.67/x
  3. Step 3: Cross multiply
    179.05x = 247.09 × 113.67
  4. Step 4: Simplify right side
    179.05x = 28,086.72
  5. Step 5: Solve for x
    x = 28,086.72/179.05
  6. Step 6: Final answer
    x = 156.87

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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.