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Finding the Fourth Proportional to 449.82, 673.86 and 266.67

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Solution

The fourth proportional to 449.82, 673.86 and 266.67 is: 399.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.82 : 673.86 = 266.67 : x
  2. Step 2: Convert to fraction form
    449.82/673.86 = 266.67/x
  3. Step 3: Cross multiply
    449.82x = 673.86 × 266.67
  4. Step 4: Simplify right side
    449.82x = 179,698.25
  5. Step 5: Solve for x
    x = 179,698.25/449.82
  6. Step 6: Final answer
    x = 399.49

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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.