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Finding the Fourth Proportional to 2,269.62, 3,405.04 and 808.89

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Solution

The fourth proportional to 2,269.62, 3,405.04 and 808.89 is: 1,213.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,269.62 : 3,405.04 = 808.89 : x
  2. Step 2: Convert to fraction form
    2,269.62/3,405.04 = 808.89/x
  3. Step 3: Cross multiply
    2,269.62x = 3,405.04 × 808.89
  4. Step 4: Simplify right side
    2,269.62x = 2,754,288.01
  5. Step 5: Solve for x
    x = 2,754,288.01/2,269.62
  6. Step 6: Final answer
    x = 1,213.55

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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.