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Finding the Fourth Proportional to 1,103.09, 1,522.22 and 605.66

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Solution

The fourth proportional to 1,103.09, 1,522.22 and 605.66 is: 835.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,103.09 : 1,522.22 = 605.66 : x
  2. Step 2: Convert to fraction form
    1,103.09/1,522.22 = 605.66/x
  3. Step 3: Cross multiply
    1,103.09x = 1,522.22 × 605.66
  4. Step 4: Simplify right side
    1,103.09x = 921,937.13
  5. Step 5: Solve for x
    x = 921,937.13/1,103.09
  6. Step 6: Final answer
    x = 835.78

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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.