Home / 1,191.16-1,786.79-325.47

Finding the Fourth Proportional to 1,191.16, 1,786.79 and 325.47

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Solution

The fourth proportional to 1,191.16, 1,786.79 and 325.47 is: 488.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191.16 : 1,786.79 = 325.47 : x
  2. Step 2: Convert to fraction form
    1,191.16/1,786.79 = 325.47/x
  3. Step 3: Cross multiply
    1,191.16x = 1,786.79 × 325.47
  4. Step 4: Simplify right side
    1,191.16x = 581,546.54
  5. Step 5: Solve for x
    x = 581,546.54/1,191.16
  6. Step 6: Final answer
    x = 488.22

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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.