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Finding the Fourth Proportional to 1,229.00, 1,843.79 and 579.38

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Solution

The fourth proportional to 1,229.00, 1,843.79 and 579.38 is: 869.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,229.00 : 1,843.79 = 579.38 : x
  2. Step 2: Convert to fraction form
    1,229.00/1,843.79 = 579.38/x
  3. Step 3: Cross multiply
    1,229.00x = 1,843.79 × 579.38
  4. Step 4: Simplify right side
    1,229.00x = 1,068,242.93
  5. Step 5: Solve for x
    x = 1,068,242.93/1,229.00
  6. Step 6: Final answer
    x = 869.20

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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.