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Finding the Fourth Proportional to 1,227.07, 1,840.93 and 743.23

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Solution

The fourth proportional to 1,227.07, 1,840.93 and 743.23 is: 1,115.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,227.07 : 1,840.93 = 743.23 : x
  2. Step 2: Convert to fraction form
    1,227.07/1,840.93 = 743.23/x
  3. Step 3: Cross multiply
    1,227.07x = 1,840.93 × 743.23
  4. Step 4: Simplify right side
    1,227.07x = 1,368,230.69
  5. Step 5: Solve for x
    x = 1,368,230.69/1,227.07
  6. Step 6: Final answer
    x = 1,115.04

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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.