Home / 1,267.20-1,901.24-445.59

Finding the Fourth Proportional to 1,267.20, 1,901.24 and 445.59

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Solution

The fourth proportional to 1,267.20, 1,901.24 and 445.59 is: 668.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,267.20 : 1,901.24 = 445.59 : x
  2. Step 2: Convert to fraction form
    1,267.20/1,901.24 = 445.59/x
  3. Step 3: Cross multiply
    1,267.20x = 1,901.24 × 445.59
  4. Step 4: Simplify right side
    1,267.20x = 847,171.30
  5. Step 5: Solve for x
    x = 847,171.30/1,267.20
  6. Step 6: Final answer
    x = 668.54

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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.