Home / 1,317.46-1,976.56-495.58

Finding the Fourth Proportional to 1,317.46, 1,976.56 and 495.58

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Solution

The fourth proportional to 1,317.46, 1,976.56 and 495.58 is: 743.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.46 : 1,976.56 = 495.58 : x
  2. Step 2: Convert to fraction form
    1,317.46/1,976.56 = 495.58/x
  3. Step 3: Cross multiply
    1,317.46x = 1,976.56 × 495.58
  4. Step 4: Simplify right side
    1,317.46x = 979,543.60
  5. Step 5: Solve for x
    x = 979,543.60/1,317.46
  6. Step 6: Final answer
    x = 743.51

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1.5x scale

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.