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Finding the Fourth Proportional to 449.38, 673.04 and 318.94

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Solution

The fourth proportional to 449.38, 673.04 and 318.94 is: 477.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.38 : 673.04 = 318.94 : x
  2. Step 2: Convert to fraction form
    449.38/673.04 = 318.94/x
  3. Step 3: Cross multiply
    449.38x = 673.04 × 318.94
  4. Step 4: Simplify right side
    449.38x = 214,659.38
  5. Step 5: Solve for x
    x = 214,659.38/449.38
  6. Step 6: Final answer
    x = 477.68

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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.