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Finding the Fourth Proportional to 605.04, 835.04 and 439.80

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Solution

The fourth proportional to 605.04, 835.04 and 439.80 is: 606.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.04 : 835.04 = 439.80 : x
  2. Step 2: Convert to fraction form
    605.04/835.04 = 439.80/x
  3. Step 3: Cross multiply
    605.04x = 835.04 × 439.80
  4. Step 4: Simplify right side
    605.04x = 367,250.59
  5. Step 5: Solve for x
    x = 367,250.59/605.04
  6. Step 6: Final answer
    x = 606.99

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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.