Home / 1,481.22-2,220.30-658.80

Finding the Fourth Proportional to 1,481.22, 2,220.30 and 658.80

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Solution

The fourth proportional to 1,481.22, 2,220.30 and 658.80 is: 987.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,481.22 : 2,220.30 = 658.80 : x
  2. Step 2: Convert to fraction form
    1,481.22/2,220.30 = 658.80/x
  3. Step 3: Cross multiply
    1,481.22x = 2,220.30 × 658.80
  4. Step 4: Simplify right side
    1,481.22x = 1,462,733.64
  5. Step 5: Solve for x
    x = 1,462,733.64/1,481.22
  6. Step 6: Final answer
    x = 987.52

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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.