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Finding the Fourth Proportional to 1,481.41, 2,221.63 and 494.01

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Solution

The fourth proportional to 1,481.41, 2,221.63 and 494.01 is: 740.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,481.41 : 2,221.63 = 494.01 : x
  2. Step 2: Convert to fraction form
    1,481.41/2,221.63 = 494.01/x
  3. Step 3: Cross multiply
    1,481.41x = 2,221.63 × 494.01
  4. Step 4: Simplify right side
    1,481.41x = 1,097,512.99
  5. Step 5: Solve for x
    x = 1,097,512.99/1,481.41
  6. Step 6: Final answer
    x = 740.86

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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.