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Finding the Fourth Proportional to 449.33, 673.77 and 205.65

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Solution

The fourth proportional to 449.33, 673.77 and 205.65 is: 308.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.33 : 673.77 = 205.65 : x
  2. Step 2: Convert to fraction form
    449.33/673.77 = 205.65/x
  3. Step 3: Cross multiply
    449.33x = 673.77 × 205.65
  4. Step 4: Simplify right side
    449.33x = 138,561.19
  5. Step 5: Solve for x
    x = 138,561.19/449.33
  6. Step 6: Final answer
    x = 308.37

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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.