Home / 1,318.23-1,976.94-496.89

Finding the Fourth Proportional to 1,318.23, 1,976.94 and 496.89

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Solution

The fourth proportional to 1,318.23, 1,976.94 and 496.89 is: 745.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318.23 : 1,976.94 = 496.89 : x
  2. Step 2: Convert to fraction form
    1,318.23/1,976.94 = 496.89/x
  3. Step 3: Cross multiply
    1,318.23x = 1,976.94 × 496.89
  4. Step 4: Simplify right side
    1,318.23x = 982,321.72
  5. Step 5: Solve for x
    x = 982,321.72/1,318.23
  6. Step 6: Final answer
    x = 745.18

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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.