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Finding the Fourth Proportional to 238.26, 356.99 and 156.86

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Solution

The fourth proportional to 238.26, 356.99 and 156.86 is: 235.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.26 : 356.99 = 156.86 : x
  2. Step 2: Convert to fraction form
    238.26/356.99 = 156.86/x
  3. Step 3: Cross multiply
    238.26x = 356.99 × 156.86
  4. Step 4: Simplify right side
    238.26x = 55,997.45
  5. Step 5: Solve for x
    x = 55,997.45/238.26
  6. Step 6: Final answer
    x = 235.03

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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.