Home / 1,043.13-1,439.52-629.13

Finding the Fourth Proportional to 1,043.13, 1,439.52 and 629.13

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Solution

The fourth proportional to 1,043.13, 1,439.52 and 629.13 is: 868.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,043.13 : 1,439.52 = 629.13 : x
  2. Step 2: Convert to fraction form
    1,043.13/1,439.52 = 629.13/x
  3. Step 3: Cross multiply
    1,043.13x = 1,439.52 × 629.13
  4. Step 4: Simplify right side
    1,043.13x = 905,645.22
  5. Step 5: Solve for x
    x = 905,645.22/1,043.13
  6. Step 6: Final answer
    x = 868.20

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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.