Home / 1,189.20-1,783.16-367.12

Finding the Fourth Proportional to 1,189.20, 1,783.16 and 367.12

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Solution

The fourth proportional to 1,189.20, 1,783.16 and 367.12 is: 550.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189.20 : 1,783.16 = 367.12 : x
  2. Step 2: Convert to fraction form
    1,189.20/1,783.16 = 367.12/x
  3. Step 3: Cross multiply
    1,189.20x = 1,783.16 × 367.12
  4. Step 4: Simplify right side
    1,189.20x = 654,633.70
  5. Step 5: Solve for x
    x = 654,633.70/1,189.20
  6. Step 6: Final answer
    x = 550.48

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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.