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Finding the Fourth Proportional to 2,203.05, 3,303.48 and 816.33

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Solution

The fourth proportional to 2,203.05, 3,303.48 and 816.33 is: 1,224.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,203.05 : 3,303.48 = 816.33 : x
  2. Step 2: Convert to fraction form
    2,203.05/3,303.48 = 816.33/x
  3. Step 3: Cross multiply
    2,203.05x = 3,303.48 × 816.33
  4. Step 4: Simplify right side
    2,203.05x = 2,696,729.83
  5. Step 5: Solve for x
    x = 2,696,729.83/2,203.05
  6. Step 6: Final answer
    x = 1,224.09

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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.