Home / 1,190.26-1,785.19-459.85

Finding the Fourth Proportional to 1,190.26, 1,785.19 and 459.85

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Solution

The fourth proportional to 1,190.26, 1,785.19 and 459.85 is: 689.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190.26 : 1,785.19 = 459.85 : x
  2. Step 2: Convert to fraction form
    1,190.26/1,785.19 = 459.85/x
  3. Step 3: Cross multiply
    1,190.26x = 1,785.19 × 459.85
  4. Step 4: Simplify right side
    1,190.26x = 820,908.40
  5. Step 5: Solve for x
    x = 820,908.40/1,190.26
  6. Step 6: Final answer
    x = 689.69

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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.