Home / 1,040.27-1,559.49-391.46

Finding the Fourth Proportional to 1,040.27, 1,559.49 and 391.46

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Solution

The fourth proportional to 1,040.27, 1,559.49 and 391.46 is: 586.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040.27 : 1,559.49 = 391.46 : x
  2. Step 2: Convert to fraction form
    1,040.27/1,559.49 = 391.46/x
  3. Step 3: Cross multiply
    1,040.27x = 1,559.49 × 391.46
  4. Step 4: Simplify right side
    1,040.27x = 610,468.20
  5. Step 5: Solve for x
    x = 610,468.20/1,040.27
  6. Step 6: Final answer
    x = 586.84

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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.