Home / 1,027.73-1,418.40-629.31

Finding the Fourth Proportional to 1,027.73, 1,418.40 and 629.31

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Solution

The fourth proportional to 1,027.73, 1,418.40 and 629.31 is: 868.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,027.73 : 1,418.40 = 629.31 : x
  2. Step 2: Convert to fraction form
    1,027.73/1,418.40 = 629.31/x
  3. Step 3: Cross multiply
    1,027.73x = 1,418.40 × 629.31
  4. Step 4: Simplify right side
    1,027.73x = 892,613.30
  5. Step 5: Solve for x
    x = 892,613.30/1,027.73
  6. Step 6: Final answer
    x = 868.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.