Home / 1,101.14-1,519.70-629.11

Finding the Fourth Proportional to 1,101.14, 1,519.70 and 629.11

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Solution

The fourth proportional to 1,101.14, 1,519.70 and 629.11 is: 868.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,101.14 : 1,519.70 = 629.11 : x
  2. Step 2: Convert to fraction form
    1,101.14/1,519.70 = 629.11/x
  3. Step 3: Cross multiply
    1,101.14x = 1,519.70 × 629.11
  4. Step 4: Simplify right side
    1,101.14x = 956,051.52
  5. Step 5: Solve for x
    x = 956,051.52/1,101.14
  6. Step 6: Final answer
    x = 868.24

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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.