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Finding the Fourth Proportional to 2,203.70, 3,305.92 and 817.04

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Solution

The fourth proportional to 2,203.70, 3,305.92 and 817.04 is: 1,225.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,203.70 : 3,305.92 = 817.04 : x
  2. Step 2: Convert to fraction form
    2,203.70/3,305.92 = 817.04/x
  3. Step 3: Cross multiply
    2,203.70x = 3,305.92 × 817.04
  4. Step 4: Simplify right side
    2,203.70x = 2,701,068.88
  5. Step 5: Solve for x
    x = 2,701,068.88/2,203.70
  6. Step 6: Final answer
    x = 1,225.70

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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.