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Finding the Fourth Proportional to 1,204.92, 1,806.12 and 1,147.32

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Solution

The fourth proportional to 1,204.92, 1,806.12 and 1,147.32 is: 1,719.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,204.92 : 1,806.12 = 1,147.32 : x
  2. Step 2: Convert to fraction form
    1,204.92/1,806.12 = 1,147.32/x
  3. Step 3: Cross multiply
    1,204.92x = 1,806.12 × 1,147.32
  4. Step 4: Simplify right side
    1,204.92x = 2,072,197.60
  5. Step 5: Solve for x
    x = 2,072,197.60/1,204.92
  6. Step 6: Final answer
    x = 1,719.78

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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.