Home / 1,351.36-2,027.22-485.56

Finding the Fourth Proportional to 1,351.36, 2,027.22 and 485.56

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Solution

The fourth proportional to 1,351.36, 2,027.22 and 485.56 is: 728.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351.36 : 2,027.22 = 485.56 : x
  2. Step 2: Convert to fraction form
    1,351.36/2,027.22 = 485.56/x
  3. Step 3: Cross multiply
    1,351.36x = 2,027.22 × 485.56
  4. Step 4: Simplify right side
    1,351.36x = 984,336.94
  5. Step 5: Solve for x
    x = 984,336.94/1,351.36
  6. Step 6: Final answer
    x = 728.40

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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.