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Finding the Fourth Proportional to 923.49, 1,273.83 and 550.21

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Solution

The fourth proportional to 923.49, 1,273.83 and 550.21 is: 758.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    923.49 : 1,273.83 = 550.21 : x
  2. Step 2: Convert to fraction form
    923.49/1,273.83 = 550.21/x
  3. Step 3: Cross multiply
    923.49x = 1,273.83 × 550.21
  4. Step 4: Simplify right side
    923.49x = 700,874.00
  5. Step 5: Solve for x
    x = 700,874.00/923.49
  6. Step 6: Final answer
    x = 758.94

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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.