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Finding the Fourth Proportional to 449.78, 674.53 and 295.70

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Solution

The fourth proportional to 449.78, 674.53 and 295.70 is: 443.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.78 : 674.53 = 295.70 : x
  2. Step 2: Convert to fraction form
    449.78/674.53 = 295.70/x
  3. Step 3: Cross multiply
    449.78x = 674.53 × 295.70
  4. Step 4: Simplify right side
    449.78x = 199,458.52
  5. Step 5: Solve for x
    x = 199,458.52/449.78
  6. Step 6: Final answer
    x = 443.46

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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.