Home / 1,442.26-2,163.04-620.92

Finding the Fourth Proportional to 1,442.26, 2,163.04 and 620.92

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Solution

The fourth proportional to 1,442.26, 2,163.04 and 620.92 is: 931.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442.26 : 2,163.04 = 620.92 : x
  2. Step 2: Convert to fraction form
    1,442.26/2,163.04 = 620.92/x
  3. Step 3: Cross multiply
    1,442.26x = 2,163.04 × 620.92
  4. Step 4: Simplify right side
    1,442.26x = 1,343,074.80
  5. Step 5: Solve for x
    x = 1,343,074.80/1,442.26
  6. Step 6: Final answer
    x = 931.23

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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.