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Finding the Fourth Proportional to 1,862.38, 2,794.13 and 629.68

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Solution

The fourth proportional to 1,862.38, 2,794.13 and 629.68 is: 944.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,862.38 : 2,794.13 = 629.68 : x
  2. Step 2: Convert to fraction form
    1,862.38/2,794.13 = 629.68/x
  3. Step 3: Cross multiply
    1,862.38x = 2,794.13 × 629.68
  4. Step 4: Simplify right side
    1,862.38x = 1,759,407.78
  5. Step 5: Solve for x
    x = 1,759,407.78/1,862.38
  6. Step 6: Final answer
    x = 944.71

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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.