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Finding the Fourth Proportional to 450.22, 673.70 and 439.42

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Solution

The fourth proportional to 450.22, 673.70 and 439.42 is: 657.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.22 : 673.70 = 439.42 : x
  2. Step 2: Convert to fraction form
    450.22/673.70 = 439.42/x
  3. Step 3: Cross multiply
    450.22x = 673.70 × 439.42
  4. Step 4: Simplify right side
    450.22x = 296,037.25
  5. Step 5: Solve for x
    x = 296,037.25/450.22
  6. Step 6: Final answer
    x = 657.54

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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.