Home / 1,317.44-1,976.16-451.76

Finding the Fourth Proportional to 1,317.44, 1,976.16 and 451.76

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Solution

The fourth proportional to 1,317.44, 1,976.16 and 451.76 is: 677.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.44 : 1,976.16 = 451.76 : x
  2. Step 2: Convert to fraction form
    1,317.44/1,976.16 = 451.76/x
  3. Step 3: Cross multiply
    1,317.44x = 1,976.16 × 451.76
  4. Step 4: Simplify right side
    1,317.44x = 892,750.04
  5. Step 5: Solve for x
    x = 892,750.04/1,317.44
  6. Step 6: Final answer
    x = 677.64

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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.