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Finding the Fourth Proportional to 449.05, 673.06 and 205.60

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Solution

The fourth proportional to 449.05, 673.06 and 205.60 is: 308.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.05 : 673.06 = 205.60 : x
  2. Step 2: Convert to fraction form
    449.05/673.06 = 205.60/x
  3. Step 3: Cross multiply
    449.05x = 673.06 × 205.60
  4. Step 4: Simplify right side
    449.05x = 138,381.14
  5. Step 5: Solve for x
    x = 138,381.14/449.05
  6. Step 6: Final answer
    x = 308.16

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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.