Home / 1,318.49-1,976.84-496.61

Finding the Fourth Proportional to 1,318.49, 1,976.84 and 496.61

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Solution

The fourth proportional to 1,318.49, 1,976.84 and 496.61 is: 744.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318.49 : 1,976.84 = 496.61 : x
  2. Step 2: Convert to fraction form
    1,318.49/1,976.84 = 496.61/x
  3. Step 3: Cross multiply
    1,318.49x = 1,976.84 × 496.61
  4. Step 4: Simplify right side
    1,318.49x = 981,716.03
  5. Step 5: Solve for x
    x = 981,716.03/1,318.49
  6. Step 6: Final answer
    x = 744.58

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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.