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Finding the Fourth Proportional to 1,902.28, 2,852.92 and 806.08

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Solution

The fourth proportional to 1,902.28, 2,852.92 and 806.08 is: 1,208.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,902.28 : 2,852.92 = 806.08 : x
  2. Step 2: Convert to fraction form
    1,902.28/2,852.92 = 806.08/x
  3. Step 3: Cross multiply
    1,902.28x = 2,852.92 × 806.08
  4. Step 4: Simplify right side
    1,902.28x = 2,299,681.75
  5. Step 5: Solve for x
    x = 2,299,681.75/1,902.28
  6. Step 6: Final answer
    x = 1,208.91

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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.