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Finding the Fourth Proportional to 800.77, 1,201.32 and 252.97

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Solution

The fourth proportional to 800.77, 1,201.32 and 252.97 is: 379.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    800.77 : 1,201.32 = 252.97 : x
  2. Step 2: Convert to fraction form
    800.77/1,201.32 = 252.97/x
  3. Step 3: Cross multiply
    800.77x = 1,201.32 × 252.97
  4. Step 4: Simplify right side
    800.77x = 303,897.92
  5. Step 5: Solve for x
    x = 303,897.92/800.77
  6. Step 6: Final answer
    x = 379.51

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1.5x scale

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.