Home / 1,002.44-1,383.55-629.30

Finding the Fourth Proportional to 1,002.44, 1,383.55 and 629.30

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Solution

The fourth proportional to 1,002.44, 1,383.55 and 629.30 is: 868.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,002.44 : 1,383.55 = 629.30 : x
  2. Step 2: Convert to fraction form
    1,002.44/1,383.55 = 629.30/x
  3. Step 3: Cross multiply
    1,002.44x = 1,383.55 × 629.30
  4. Step 4: Simplify right side
    1,002.44x = 870,669.90
  5. Step 5: Solve for x
    x = 870,669.90/1,002.44
  6. Step 6: Final answer
    x = 868.55

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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.