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Finding the Fourth Proportional to 1,201.43, 1,798.90 and 623.09

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Solution

The fourth proportional to 1,201.43, 1,798.90 and 623.09 is: 932.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,201.43 : 1,798.90 = 623.09 : x
  2. Step 2: Convert to fraction form
    1,201.43/1,798.90 = 623.09/x
  3. Step 3: Cross multiply
    1,201.43x = 1,798.90 × 623.09
  4. Step 4: Simplify right side
    1,201.43x = 1,120,876.60
  5. Step 5: Solve for x
    x = 1,120,876.60/1,201.43
  6. Step 6: Final answer
    x = 932.95

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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.