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Finding the Fourth Proportional to 1,201.16, 1,799.94 and 926.84

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Solution

The fourth proportional to 1,201.16, 1,799.94 and 926.84 is: 1,388.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,201.16 : 1,799.94 = 926.84 : x
  2. Step 2: Convert to fraction form
    1,201.16/1,799.94 = 926.84/x
  3. Step 3: Cross multiply
    1,201.16x = 1,799.94 × 926.84
  4. Step 4: Simplify right side
    1,201.16x = 1,668,256.39
  5. Step 5: Solve for x
    x = 1,668,256.39/1,201.16
  6. Step 6: Final answer
    x = 1,388.87

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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.