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Finding the Fourth Proportional to 1,066.38, 1,599.60 and 326.01

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Solution

The fourth proportional to 1,066.38, 1,599.60 and 326.01 is: 489.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,066.38 : 1,599.60 = 326.01 : x
  2. Step 2: Convert to fraction form
    1,066.38/1,599.60 = 326.01/x
  3. Step 3: Cross multiply
    1,066.38x = 1,599.60 × 326.01
  4. Step 4: Simplify right side
    1,066.38x = 521,481.99
  5. Step 5: Solve for x
    x = 521,481.99/1,066.38
  6. Step 6: Final answer
    x = 489.02

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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.