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Finding the Fourth Proportional to 804.12, 1,107.92 and 541.68

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Solution

The fourth proportional to 804.12, 1,107.92 and 541.68 is: 746.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    804.12 : 1,107.92 = 541.68 : x
  2. Step 2: Convert to fraction form
    804.12/1,107.92 = 541.68/x
  3. Step 3: Cross multiply
    804.12x = 1,107.92 × 541.68
  4. Step 4: Simplify right side
    804.12x = 600,138.11
  5. Step 5: Solve for x
    x = 600,138.11/804.12
  6. Step 6: Final answer
    x = 746.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.