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Finding the Fourth Proportional to 2,168.88, 3,253.40 and 629.88

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Solution

The fourth proportional to 2,168.88, 3,253.40 and 629.88 is: 944.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,168.88 : 3,253.40 = 629.88 : x
  2. Step 2: Convert to fraction form
    2,168.88/3,253.40 = 629.88/x
  3. Step 3: Cross multiply
    2,168.88x = 3,253.40 × 629.88
  4. Step 4: Simplify right side
    2,168.88x = 2,049,236.90
  5. Step 5: Solve for x
    x = 2,049,236.90/2,168.88
  6. Step 6: Final answer
    x = 944.84

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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.