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Finding the Fourth Proportional to 1,083.55, 1,625.56 and 353.11

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Solution

The fourth proportional to 1,083.55, 1,625.56 and 353.11 is: 529.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,083.55 : 1,625.56 = 353.11 : x
  2. Step 2: Convert to fraction form
    1,083.55/1,625.56 = 353.11/x
  3. Step 3: Cross multiply
    1,083.55x = 1,625.56 × 353.11
  4. Step 4: Simplify right side
    1,083.55x = 573,996.54
  5. Step 5: Solve for x
    x = 573,996.54/1,083.55
  6. Step 6: Final answer
    x = 529.74

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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.