Home / 1,180.14-1,769.86-486.73

Finding the Fourth Proportional to 1,180.14, 1,769.86 and 486.73

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Solution

The fourth proportional to 1,180.14, 1,769.86 and 486.73 is: 729.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,180.14 : 1,769.86 = 486.73 : x
  2. Step 2: Convert to fraction form
    1,180.14/1,769.86 = 486.73/x
  3. Step 3: Cross multiply
    1,180.14x = 1,769.86 × 486.73
  4. Step 4: Simplify right side
    1,180.14x = 861,443.96
  5. Step 5: Solve for x
    x = 861,443.96/1,180.14
  6. Step 6: Final answer
    x = 729.95

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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.