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Finding the Fourth Proportional to 605.98, 836.43 and 385.10

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Solution

The fourth proportional to 605.98, 836.43 and 385.10 is: 531.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.98 : 836.43 = 385.10 : x
  2. Step 2: Convert to fraction form
    605.98/836.43 = 385.10/x
  3. Step 3: Cross multiply
    605.98x = 836.43 × 385.10
  4. Step 4: Simplify right side
    605.98x = 322,109.19
  5. Step 5: Solve for x
    x = 322,109.19/605.98
  6. Step 6: Final answer
    x = 531.55

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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.