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Finding the Fourth Proportional to 1,204.45, 1,662.69 and 806.77

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Solution

The fourth proportional to 1,204.45, 1,662.69 and 806.77 is: 1,113.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,204.45 : 1,662.69 = 806.77 : x
  2. Step 2: Convert to fraction form
    1,204.45/1,662.69 = 806.77/x
  3. Step 3: Cross multiply
    1,204.45x = 1,662.69 × 806.77
  4. Step 4: Simplify right side
    1,204.45x = 1,341,413.52
  5. Step 5: Solve for x
    x = 1,341,413.52/1,204.45
  6. Step 6: Final answer
    x = 1,113.72

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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.