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Finding the Fourth Proportional to 608.27, 839.42 and 475.64

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Solution

The fourth proportional to 608.27, 839.42 and 475.64 is: 656.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.27 : 839.42 = 475.64 : x
  2. Step 2: Convert to fraction form
    608.27/839.42 = 475.64/x
  3. Step 3: Cross multiply
    608.27x = 839.42 × 475.64
  4. Step 4: Simplify right side
    608.27x = 399,261.73
  5. Step 5: Solve for x
    x = 399,261.73/608.27
  6. Step 6: Final answer
    x = 656.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.