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Finding the Fourth Proportional to 1,351.12, 2,027.32 and 804.38

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Solution

The fourth proportional to 1,351.12, 2,027.32 and 804.38 is: 1,206.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351.12 : 2,027.32 = 804.38 : x
  2. Step 2: Convert to fraction form
    1,351.12/2,027.32 = 804.38/x
  3. Step 3: Cross multiply
    1,351.12x = 2,027.32 × 804.38
  4. Step 4: Simplify right side
    1,351.12x = 1,630,735.66
  5. Step 5: Solve for x
    x = 1,630,735.66/1,351.12
  6. Step 6: Final answer
    x = 1,206.95

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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.