Home / 1,317.20-1,975.44-495.41

Finding the Fourth Proportional to 1,317.20, 1,975.44 and 495.41

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Solution

The fourth proportional to 1,317.20, 1,975.44 and 495.41 is: 742.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.20 : 1,975.44 = 495.41 : x
  2. Step 2: Convert to fraction form
    1,317.20/1,975.44 = 495.41/x
  3. Step 3: Cross multiply
    1,317.20x = 1,975.44 × 495.41
  4. Step 4: Simplify right side
    1,317.20x = 978,652.73
  5. Step 5: Solve for x
    x = 978,652.73/1,317.20
  6. Step 6: Final answer
    x = 742.98

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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.