Home / 1,318.07-1,976.53-495.77

Finding the Fourth Proportional to 1,318.07, 1,976.53 and 495.77

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Solution

The fourth proportional to 1,318.07, 1,976.53 and 495.77 is: 743.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318.07 : 1,976.53 = 495.77 : x
  2. Step 2: Convert to fraction form
    1,318.07/1,976.53 = 495.77/x
  3. Step 3: Cross multiply
    1,318.07x = 1,976.53 × 495.77
  4. Step 4: Simplify right side
    1,318.07x = 979,904.28
  5. Step 5: Solve for x
    x = 979,904.28/1,318.07
  6. Step 6: Final answer
    x = 743.44

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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.