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Finding the Fourth Proportional to 1,394.22, 1,924.31 and 804.68

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Solution

The fourth proportional to 1,394.22, 1,924.31 and 804.68 is: 1,110.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,394.22 : 1,924.31 = 804.68 : x
  2. Step 2: Convert to fraction form
    1,394.22/1,924.31 = 804.68/x
  3. Step 3: Cross multiply
    1,394.22x = 1,924.31 × 804.68
  4. Step 4: Simplify right side
    1,394.22x = 1,548,440.13
  5. Step 5: Solve for x
    x = 1,548,440.13/1,394.22
  6. Step 6: Final answer
    x = 1,110.61

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