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Finding the Fourth Proportional to 403.31, 605.03 and 159.84

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Solution

The fourth proportional to 403.31, 605.03 and 159.84 is: 239.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.31 : 605.03 = 159.84 : x
  2. Step 2: Convert to fraction form
    403.31/605.03 = 159.84/x
  3. Step 3: Cross multiply
    403.31x = 605.03 × 159.84
  4. Step 4: Simplify right side
    403.31x = 96,707.20
  5. Step 5: Solve for x
    x = 96,707.20/403.31
  6. Step 6: Final answer
    x = 239.79

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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.