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Finding the Fourth Proportional to 1,179.89, 1,770.74 and 449.67

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Solution

The fourth proportional to 1,179.89, 1,770.74 and 449.67 is: 674.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179.89 : 1,770.74 = 449.67 : x
  2. Step 2: Convert to fraction form
    1,179.89/1,770.74 = 449.67/x
  3. Step 3: Cross multiply
    1,179.89x = 1,770.74 × 449.67
  4. Step 4: Simplify right side
    1,179.89x = 796,248.66
  5. Step 5: Solve for x
    x = 796,248.66/1,179.89
  6. Step 6: Final answer
    x = 674.85

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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.