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Finding the Fourth Proportional to 605.98, 836.34 and 440.74

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Solution

The fourth proportional to 605.98, 836.34 and 440.74 is: 608.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.98 : 836.34 = 440.74 : x
  2. Step 2: Convert to fraction form
    605.98/836.34 = 440.74/x
  3. Step 3: Cross multiply
    605.98x = 836.34 × 440.74
  4. Step 4: Simplify right side
    605.98x = 368,608.49
  5. Step 5: Solve for x
    x = 368,608.49/605.98
  6. Step 6: Final answer
    x = 608.28

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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.