Home / 1,317.70-1,975.39-495.76

Finding the Fourth Proportional to 1,317.70, 1,975.39 and 495.76

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Solution

The fourth proportional to 1,317.70, 1,975.39 and 495.76 is: 743.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.70 : 1,975.39 = 495.76 : x
  2. Step 2: Convert to fraction form
    1,317.70/1,975.39 = 495.76/x
  3. Step 3: Cross multiply
    1,317.70x = 1,975.39 × 495.76
  4. Step 4: Simplify right side
    1,317.70x = 979,319.35
  5. Step 5: Solve for x
    x = 979,319.35/1,317.70
  6. Step 6: Final answer
    x = 743.20

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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.