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Finding the Fourth Proportional to 1,181.28, 1,772.23 and 450.92

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Solution

The fourth proportional to 1,181.28, 1,772.23 and 450.92 is: 676.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,181.28 : 1,772.23 = 450.92 : x
  2. Step 2: Convert to fraction form
    1,181.28/1,772.23 = 450.92/x
  3. Step 3: Cross multiply
    1,181.28x = 1,772.23 × 450.92
  4. Step 4: Simplify right side
    1,181.28x = 799,128.13
  5. Step 5: Solve for x
    x = 799,128.13/1,181.28
  6. Step 6: Final answer
    x = 676.49

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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.