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Finding the Fourth Proportional to 608.11, 839.31 and 359.44

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Solution

The fourth proportional to 608.11, 839.31 and 359.44 is: 496.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.11 : 839.31 = 359.44 : x
  2. Step 2: Convert to fraction form
    608.11/839.31 = 359.44/x
  3. Step 3: Cross multiply
    608.11x = 839.31 × 359.44
  4. Step 4: Simplify right side
    608.11x = 301,680.16
  5. Step 5: Solve for x
    x = 301,680.16/608.11
  6. Step 6: Final answer
    x = 496.10

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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.