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Finding the Fourth Proportional to 2,199.67, 3,300.11 and 902.05

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Solution

The fourth proportional to 2,199.67, 3,300.11 and 902.05 is: 1,353.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,199.67 : 3,300.11 = 902.05 : x
  2. Step 2: Convert to fraction form
    2,199.67/3,300.11 = 902.05/x
  3. Step 3: Cross multiply
    2,199.67x = 3,300.11 × 902.05
  4. Step 4: Simplify right side
    2,199.67x = 2,976,864.23
  5. Step 5: Solve for x
    x = 2,976,864.23/2,199.67
  6. Step 6: Final answer
    x = 1,353.32

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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.