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Finding the Fourth Proportional to 2,265.30, 3,396.60 and 803.79

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Solution

The fourth proportional to 2,265.30, 3,396.60 and 803.79 is: 1,205.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,265.30 : 3,396.60 = 803.79 : x
  2. Step 2: Convert to fraction form
    2,265.30/3,396.60 = 803.79/x
  3. Step 3: Cross multiply
    2,265.30x = 3,396.60 × 803.79
  4. Step 4: Simplify right side
    2,265.30x = 2,730,153.11
  5. Step 5: Solve for x
    x = 2,730,153.11/2,265.30
  6. Step 6: Final answer
    x = 1,205.21

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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.