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Finding the Fourth Proportional to 1,474.91, 2,212.01 and 550.89

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Solution

The fourth proportional to 1,474.91, 2,212.01 and 550.89 is: 826.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,474.91 : 2,212.01 = 550.89 : x
  2. Step 2: Convert to fraction form
    1,474.91/2,212.01 = 550.89/x
  3. Step 3: Cross multiply
    1,474.91x = 2,212.01 × 550.89
  4. Step 4: Simplify right side
    1,474.91x = 1,218,571.43
  5. Step 5: Solve for x
    x = 1,218,571.43/1,474.91
  6. Step 6: Final answer
    x = 826.20

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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.