Home / 1,003.08-1,504.38-272.58

Finding the Fourth Proportional to 1,003.08, 1,504.38 and 272.58

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Solution

The fourth proportional to 1,003.08, 1,504.38 and 272.58 is: 408.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,003.08 : 1,504.38 = 272.58 : x
  2. Step 2: Convert to fraction form
    1,003.08/1,504.38 = 272.58/x
  3. Step 3: Cross multiply
    1,003.08x = 1,504.38 × 272.58
  4. Step 4: Simplify right side
    1,003.08x = 410,063.90
  5. Step 5: Solve for x
    x = 410,063.90/1,003.08
  6. Step 6: Final answer
    x = 408.80

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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.