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Finding the Fourth Proportional to 1,481.55, 2,221.55 and 441.41

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Solution

The fourth proportional to 1,481.55, 2,221.55 and 441.41 is: 661.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,481.55 : 2,221.55 = 441.41 : x
  2. Step 2: Convert to fraction form
    1,481.55/2,221.55 = 441.41/x
  3. Step 3: Cross multiply
    1,481.55x = 2,221.55 × 441.41
  4. Step 4: Simplify right side
    1,481.55x = 980,614.39
  5. Step 5: Solve for x
    x = 980,614.39/1,481.55
  6. Step 6: Final answer
    x = 661.88

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1.5x scale

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.