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Finding the Fourth Proportional to 1,800.05, 2,699.42 and 629.73

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Solution

The fourth proportional to 1,800.05, 2,699.42 and 629.73 is: 944.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,800.05 : 2,699.42 = 629.73 : x
  2. Step 2: Convert to fraction form
    1,800.05/2,699.42 = 629.73/x
  3. Step 3: Cross multiply
    1,800.05x = 2,699.42 × 629.73
  4. Step 4: Simplify right side
    1,800.05x = 1,699,907.33
  5. Step 5: Solve for x
    x = 1,699,907.33/1,800.05
  6. Step 6: Final answer
    x = 944.37

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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.