Home / 1,371.25-2,057.21-446.85

Finding the Fourth Proportional to 1,371.25, 2,057.21 and 446.85

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Solution

The fourth proportional to 1,371.25, 2,057.21 and 446.85 is: 670.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,371.25 : 2,057.21 = 446.85 : x
  2. Step 2: Convert to fraction form
    1,371.25/2,057.21 = 446.85/x
  3. Step 3: Cross multiply
    1,371.25x = 2,057.21 × 446.85
  4. Step 4: Simplify right side
    1,371.25x = 919,262.05
  5. Step 5: Solve for x
    x = 919,262.05/1,371.25
  6. Step 6: Final answer
    x = 670.38

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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.