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Finding the Fourth Proportional to 239.96, 360.28 and 157.71

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Solution

The fourth proportional to 239.96, 360.28 and 157.71 is: 236.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.96 : 360.28 = 157.71 : x
  2. Step 2: Convert to fraction form
    239.96/360.28 = 157.71/x
  3. Step 3: Cross multiply
    239.96x = 360.28 × 157.71
  4. Step 4: Simplify right side
    239.96x = 56,821.31
  5. Step 5: Solve for x
    x = 56,821.31/239.96
  6. Step 6: Final answer
    x = 236.79

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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.