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Finding the Fourth Proportional to 1,203.67, 1,805.35 and 326.24

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Solution

The fourth proportional to 1,203.67, 1,805.35 and 326.24 is: 489.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,203.67 : 1,805.35 = 326.24 : x
  2. Step 2: Convert to fraction form
    1,203.67/1,805.35 = 326.24/x
  3. Step 3: Cross multiply
    1,203.67x = 1,805.35 × 326.24
  4. Step 4: Simplify right side
    1,203.67x = 588,977.38
  5. Step 5: Solve for x
    x = 588,977.38/1,203.67
  6. Step 6: Final answer
    x = 489.32

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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.