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Finding the Fourth Proportional to 403.08, 604.38 and 159.72

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Solution

The fourth proportional to 403.08, 604.38 and 159.72 is: 239.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.08 : 604.38 = 159.72 : x
  2. Step 2: Convert to fraction form
    403.08/604.38 = 159.72/x
  3. Step 3: Cross multiply
    403.08x = 604.38 × 159.72
  4. Step 4: Simplify right side
    403.08x = 96,531.57
  5. Step 5: Solve for x
    x = 96,531.57/403.08
  6. Step 6: Final answer
    x = 239.48

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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.