Home / 1,442.30-2,163.39-402.27

Finding the Fourth Proportional to 1,442.30, 2,163.39 and 402.27

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Solution

The fourth proportional to 1,442.30, 2,163.39 and 402.27 is: 603.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442.30 : 2,163.39 = 402.27 : x
  2. Step 2: Convert to fraction form
    1,442.30/2,163.39 = 402.27/x
  3. Step 3: Cross multiply
    1,442.30x = 2,163.39 × 402.27
  4. Step 4: Simplify right side
    1,442.30x = 870,266.90
  5. Step 5: Solve for x
    x = 870,266.90/1,442.30
  6. Step 6: Final answer
    x = 603.39

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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.