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Finding the Fourth Proportional to 3,003.01, 4,505.02 and 811.96

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Solution

The fourth proportional to 3,003.01, 4,505.02 and 811.96 is: 1,218.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,003.01 : 4,505.02 = 811.96 : x
  2. Step 2: Convert to fraction form
    3,003.01/4,505.02 = 811.96/x
  3. Step 3: Cross multiply
    3,003.01x = 4,505.02 × 811.96
  4. Step 4: Simplify right side
    3,003.01x = 3,657,882.75
  5. Step 5: Solve for x
    x = 3,657,882.75/3,003.01
  6. Step 6: Final answer
    x = 1,218.07

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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.