Home / 1,423.20-2,135.07-449.37

Finding the Fourth Proportional to 1,423.20, 2,135.07 and 449.37

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Solution

The fourth proportional to 1,423.20, 2,135.07 and 449.37 is: 674.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423.20 : 2,135.07 = 449.37 : x
  2. Step 2: Convert to fraction form
    1,423.20/2,135.07 = 449.37/x
  3. Step 3: Cross multiply
    1,423.20x = 2,135.07 × 449.37
  4. Step 4: Simplify right side
    1,423.20x = 959,436.41
  5. Step 5: Solve for x
    x = 959,436.41/1,423.20
  6. Step 6: Final answer
    x = 674.14

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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.