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Finding the Fourth Proportional to 608.36, 839.62 and 440.37

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Solution

The fourth proportional to 608.36, 839.62 and 440.37 is: 607.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.36 : 839.62 = 440.37 : x
  2. Step 2: Convert to fraction form
    608.36/839.62 = 440.37/x
  3. Step 3: Cross multiply
    608.36x = 839.62 × 440.37
  4. Step 4: Simplify right side
    608.36x = 369,745.07
  5. Step 5: Solve for x
    x = 369,745.07/608.36
  6. Step 6: Final answer
    x = 607.77

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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.