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Finding the Fourth Proportional to 605.10, 835.04 and 339.55

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Solution

The fourth proportional to 605.10, 835.04 and 339.55 is: 468.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.10 : 835.04 = 339.55 : x
  2. Step 2: Convert to fraction form
    605.10/835.04 = 339.55/x
  3. Step 3: Cross multiply
    605.10x = 835.04 × 339.55
  4. Step 4: Simplify right side
    605.10x = 283,537.83
  5. Step 5: Solve for x
    x = 283,537.83/605.10
  6. Step 6: Final answer
    x = 468.58

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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.