Home / 1,222.25-1,833.68-356.57

Finding the Fourth Proportional to 1,222.25, 1,833.68 and 356.57

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Solution

The fourth proportional to 1,222.25, 1,833.68 and 356.57 is: 534.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222.25 : 1,833.68 = 356.57 : x
  2. Step 2: Convert to fraction form
    1,222.25/1,833.68 = 356.57/x
  3. Step 3: Cross multiply
    1,222.25x = 1,833.68 × 356.57
  4. Step 4: Simplify right side
    1,222.25x = 653,826.11
  5. Step 5: Solve for x
    x = 653,826.11/1,222.25
  6. Step 6: Final answer
    x = 534.94

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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.