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Finding the Fourth Proportional to 1,103.17, 1,522.42 and 605.81

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Solution

The fourth proportional to 1,103.17, 1,522.42 and 605.81 is: 836.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,103.17 : 1,522.42 = 605.81 : x
  2. Step 2: Convert to fraction form
    1,103.17/1,522.42 = 605.81/x
  3. Step 3: Cross multiply
    1,103.17x = 1,522.42 × 605.81
  4. Step 4: Simplify right side
    1,103.17x = 922,288.13
  5. Step 5: Solve for x
    x = 922,288.13/1,103.17
  6. Step 6: Final answer
    x = 836.03

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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.