Home / 1,190.45-1,785.70-324.76

Finding the Fourth Proportional to 1,190.45, 1,785.70 and 324.76

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Solution

The fourth proportional to 1,190.45, 1,785.70 and 324.76 is: 487.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190.45 : 1,785.70 = 324.76 : x
  2. Step 2: Convert to fraction form
    1,190.45/1,785.70 = 324.76/x
  3. Step 3: Cross multiply
    1,190.45x = 1,785.70 × 324.76
  4. Step 4: Simplify right side
    1,190.45x = 579,923.93
  5. Step 5: Solve for x
    x = 579,923.93/1,190.45
  6. Step 6: Final answer
    x = 487.15

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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.