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Finding the Fourth Proportional to 1,103.29, 1,654.77 and 323.09

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Solution

The fourth proportional to 1,103.29, 1,654.77 and 323.09 is: 484.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,103.29 : 1,654.77 = 323.09 : x
  2. Step 2: Convert to fraction form
    1,103.29/1,654.77 = 323.09/x
  3. Step 3: Cross multiply
    1,103.29x = 1,654.77 × 323.09
  4. Step 4: Simplify right side
    1,103.29x = 534,639.64
  5. Step 5: Solve for x
    x = 534,639.64/1,103.29
  6. Step 6: Final answer
    x = 484.59

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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.