Home / 1,366.24-2,049.43-392.31

Finding the Fourth Proportional to 1,366.24, 2,049.43 and 392.31

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Solution

The fourth proportional to 1,366.24, 2,049.43 and 392.31 is: 588.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,366.24 : 2,049.43 = 392.31 : x
  2. Step 2: Convert to fraction form
    1,366.24/2,049.43 = 392.31/x
  3. Step 3: Cross multiply
    1,366.24x = 2,049.43 × 392.31
  4. Step 4: Simplify right side
    1,366.24x = 804,011.88
  5. Step 5: Solve for x
    x = 804,011.88/1,366.24
  6. Step 6: Final answer
    x = 588.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.