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Finding the Fourth Proportional to 179.70, 268.91 and 122.74

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Solution

The fourth proportional to 179.70, 268.91 and 122.74 is: 183.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.70 : 268.91 = 122.74 : x
  2. Step 2: Convert to fraction form
    179.70/268.91 = 122.74/x
  3. Step 3: Cross multiply
    179.70x = 268.91 × 122.74
  4. Step 4: Simplify right side
    179.70x = 33,006.01
  5. Step 5: Solve for x
    x = 33,006.01/179.70
  6. Step 6: Final answer
    x = 183.67

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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.