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Finding the Fourth Proportional to 1,190.99, 1,786.66 and 369.33

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Solution

The fourth proportional to 1,190.99, 1,786.66 and 369.33 is: 554.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190.99 : 1,786.66 = 369.33 : x
  2. Step 2: Convert to fraction form
    1,190.99/1,786.66 = 369.33/x
  3. Step 3: Cross multiply
    1,190.99x = 1,786.66 × 369.33
  4. Step 4: Simplify right side
    1,190.99x = 659,867.14
  5. Step 5: Solve for x
    x = 659,867.14/1,190.99
  6. Step 6: Final answer
    x = 554.05

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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.