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Finding the Fourth Proportional to 605.36, 835.64 and 409.44

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Solution

The fourth proportional to 605.36, 835.64 and 409.44 is: 565.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.36 : 835.64 = 409.44 : x
  2. Step 2: Convert to fraction form
    605.36/835.64 = 409.44/x
  3. Step 3: Cross multiply
    605.36x = 835.64 × 409.44
  4. Step 4: Simplify right side
    605.36x = 342,144.44
  5. Step 5: Solve for x
    x = 342,144.44/605.36
  6. Step 6: Final answer
    x = 565.19

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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.