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Finding the Fourth Proportional to 481.43, 668.86 and 475.67

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Solution

The fourth proportional to 481.43, 668.86 and 475.67 is: 660.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.43 : 668.86 = 475.67 : x
  2. Step 2: Convert to fraction form
    481.43/668.86 = 475.67/x
  3. Step 3: Cross multiply
    481.43x = 668.86 × 475.67
  4. Step 4: Simplify right side
    481.43x = 318,154.26
  5. Step 5: Solve for x
    x = 318,154.26/481.43
  6. Step 6: Final answer
    x = 660.85

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.