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Finding the Fourth Proportional to 1,201.04, 1,801.89 and 379.29

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Solution

The fourth proportional to 1,201.04, 1,801.89 and 379.29 is: 569.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,201.04 : 1,801.89 = 379.29 : x
  2. Step 2: Convert to fraction form
    1,201.04/1,801.89 = 379.29/x
  3. Step 3: Cross multiply
    1,201.04x = 1,801.89 × 379.29
  4. Step 4: Simplify right side
    1,201.04x = 683,438.86
  5. Step 5: Solve for x
    x = 683,438.86/1,201.04
  6. Step 6: Final answer
    x = 569.04

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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.