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Finding the Fourth Proportional to 1,190.97, 1,786.58 and 410.88

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Solution

The fourth proportional to 1,190.97, 1,786.58 and 410.88 is: 616.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190.97 : 1,786.58 = 410.88 : x
  2. Step 2: Convert to fraction form
    1,190.97/1,786.58 = 410.88/x
  3. Step 3: Cross multiply
    1,190.97x = 1,786.58 × 410.88
  4. Step 4: Simplify right side
    1,190.97x = 734,067.94
  5. Step 5: Solve for x
    x = 734,067.94/1,190.97
  6. Step 6: Final answer
    x = 616.36

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1.5x scale

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.