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Finding the Fourth Proportional to 481.32, 668.83 and 476.31

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Solution

The fourth proportional to 481.32, 668.83 and 476.31 is: 661.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.32 : 668.83 = 476.31 : x
  2. Step 2: Convert to fraction form
    481.32/668.83 = 476.31/x
  3. Step 3: Cross multiply
    481.32x = 668.83 × 476.31
  4. Step 4: Simplify right side
    481.32x = 318,570.42
  5. Step 5: Solve for x
    x = 318,570.42/481.32
  6. Step 6: Final answer
    x = 661.87

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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.