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Finding the Fourth Proportional to 802.26, 1,107.09 and 605.43

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Solution

The fourth proportional to 802.26, 1,107.09 and 605.43 is: 835.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.26 : 1,107.09 = 605.43 : x
  2. Step 2: Convert to fraction form
    802.26/1,107.09 = 605.43/x
  3. Step 3: Cross multiply
    802.26x = 1,107.09 × 605.43
  4. Step 4: Simplify right side
    802.26x = 670,265.50
  5. Step 5: Solve for x
    x = 670,265.50/802.26
  6. Step 6: Final answer
    x = 835.47

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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.