Home / 1,475.12-2,212.44-449.12

Finding the Fourth Proportional to 1,475.12, 2,212.44 and 449.12

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Solution

The fourth proportional to 1,475.12, 2,212.44 and 449.12 is: 673.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,475.12 : 2,212.44 = 449.12 : x
  2. Step 2: Convert to fraction form
    1,475.12/2,212.44 = 449.12/x
  3. Step 3: Cross multiply
    1,475.12x = 2,212.44 × 449.12
  4. Step 4: Simplify right side
    1,475.12x = 993,651.05
  5. Step 5: Solve for x
    x = 993,651.05/1,475.12
  6. Step 6: Final answer
    x = 673.61

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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.