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Finding the Fourth Proportional to 1,012.27, 1,517.18 and 550.03

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Solution

The fourth proportional to 1,012.27, 1,517.18 and 550.03 is: 824.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,012.27 : 1,517.18 = 550.03 : x
  2. Step 2: Convert to fraction form
    1,012.27/1,517.18 = 550.03/x
  3. Step 3: Cross multiply
    1,012.27x = 1,517.18 × 550.03
  4. Step 4: Simplify right side
    1,012.27x = 834,486.93
  5. Step 5: Solve for x
    x = 834,486.93/1,012.27
  6. Step 6: Final answer
    x = 824.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.