Home / 1,222.32-1,833.87-401.19

Finding the Fourth Proportional to 1,222.32, 1,833.87 and 401.19

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Solution

The fourth proportional to 1,222.32, 1,833.87 and 401.19 is: 601.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222.32 : 1,833.87 = 401.19 : x
  2. Step 2: Convert to fraction form
    1,222.32/1,833.87 = 401.19/x
  3. Step 3: Cross multiply
    1,222.32x = 1,833.87 × 401.19
  4. Step 4: Simplify right side
    1,222.32x = 735,724.93
  5. Step 5: Solve for x
    x = 735,724.93/1,222.32
  6. Step 6: Final answer
    x = 601.91

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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.