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Finding the Fourth Proportional to 2,168.40, 3,252.36 and 629.40

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Solution

The fourth proportional to 2,168.40, 3,252.36 and 629.40 is: 944.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,168.40 : 3,252.36 = 629.40 : x
  2. Step 2: Convert to fraction form
    2,168.40/3,252.36 = 629.40/x
  3. Step 3: Cross multiply
    2,168.40x = 3,252.36 × 629.40
  4. Step 4: Simplify right side
    2,168.40x = 2,047,035.38
  5. Step 5: Solve for x
    x = 2,047,035.38/2,168.40
  6. Step 6: Final answer
    x = 944.03

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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.