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Finding the Fourth Proportional to 1,091.26, 1,637.04 and 441.84

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Solution

The fourth proportional to 1,091.26, 1,637.04 and 441.84 is: 662.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091.26 : 1,637.04 = 441.84 : x
  2. Step 2: Convert to fraction form
    1,091.26/1,637.04 = 441.84/x
  3. Step 3: Cross multiply
    1,091.26x = 1,637.04 × 441.84
  4. Step 4: Simplify right side
    1,091.26x = 723,317.55
  5. Step 5: Solve for x
    x = 723,317.55/1,091.26
  6. Step 6: Final answer
    x = 662.83

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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.