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Finding the Fourth Proportional to 1,995.28, 2,991.84 and 608.02

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Solution

The fourth proportional to 1,995.28, 2,991.84 and 608.02 is: 911.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,995.28 : 2,991.84 = 608.02 : x
  2. Step 2: Convert to fraction form
    1,995.28/2,991.84 = 608.02/x
  3. Step 3: Cross multiply
    1,995.28x = 2,991.84 × 608.02
  4. Step 4: Simplify right side
    1,995.28x = 1,819,098.56
  5. Step 5: Solve for x
    x = 1,819,098.56/1,995.28
  6. Step 6: Final answer
    x = 911.70

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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.