Home / 1,211.25-1,816.52-552.75

Finding the Fourth Proportional to 1,211.25, 1,816.52 and 552.75

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Solution

The fourth proportional to 1,211.25, 1,816.52 and 552.75 is: 828.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211.25 : 1,816.52 = 552.75 : x
  2. Step 2: Convert to fraction form
    1,211.25/1,816.52 = 552.75/x
  3. Step 3: Cross multiply
    1,211.25x = 1,816.52 × 552.75
  4. Step 4: Simplify right side
    1,211.25x = 1,004,078.67
  5. Step 5: Solve for x
    x = 1,004,078.67/1,211.25
  6. Step 6: Final answer
    x = 828.96

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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.