Home / 1,101.22-1,519.69-629.17

Finding the Fourth Proportional to 1,101.22, 1,519.69 and 629.17

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Solution

The fourth proportional to 1,101.22, 1,519.69 and 629.17 is: 868.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,101.22 : 1,519.69 = 629.17 : x
  2. Step 2: Convert to fraction form
    1,101.22/1,519.69 = 629.17/x
  3. Step 3: Cross multiply
    1,101.22x = 1,519.69 × 629.17
  4. Step 4: Simplify right side
    1,101.22x = 956,149.06
  5. Step 5: Solve for x
    x = 956,149.06/1,101.22
  6. Step 6: Final answer
    x = 868.27

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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.