Home / 1,299.24-1,947.78-605.54

Finding the Fourth Proportional to 1,299.24, 1,947.78 and 605.54

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Solution

The fourth proportional to 1,299.24, 1,947.78 and 605.54 is: 907.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299.24 : 1,947.78 = 605.54 : x
  2. Step 2: Convert to fraction form
    1,299.24/1,947.78 = 605.54/x
  3. Step 3: Cross multiply
    1,299.24x = 1,947.78 × 605.54
  4. Step 4: Simplify right side
    1,299.24x = 1,179,463.57
  5. Step 5: Solve for x
    x = 1,179,463.57/1,299.24
  6. Step 6: Final answer
    x = 907.81

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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.