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Finding the Fourth Proportional to 1,221.88, 1,832.82 and 441.76

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Solution

The fourth proportional to 1,221.88, 1,832.82 and 441.76 is: 662.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221.88 : 1,832.82 = 441.76 : x
  2. Step 2: Convert to fraction form
    1,221.88/1,832.82 = 441.76/x
  3. Step 3: Cross multiply
    1,221.88x = 1,832.82 × 441.76
  4. Step 4: Simplify right side
    1,221.88x = 809,666.56
  5. Step 5: Solve for x
    x = 809,666.56/1,221.88
  6. Step 6: Final answer
    x = 662.64

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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.