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Finding the Fourth Proportional to 445.11, 667.39 and 262.54

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Solution

The fourth proportional to 445.11, 667.39 and 262.54 is: 393.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.11 : 667.39 = 262.54 : x
  2. Step 2: Convert to fraction form
    445.11/667.39 = 262.54/x
  3. Step 3: Cross multiply
    445.11x = 667.39 × 262.54
  4. Step 4: Simplify right side
    445.11x = 175,216.57
  5. Step 5: Solve for x
    x = 175,216.57/445.11
  6. Step 6: Final answer
    x = 393.65

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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.