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Finding the Fourth Proportional to 238.93, 357.62 and 161.86

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Solution

The fourth proportional to 238.93, 357.62 and 161.86 is: 242.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.93 : 357.62 = 161.86 : x
  2. Step 2: Convert to fraction form
    238.93/357.62 = 161.86/x
  3. Step 3: Cross multiply
    238.93x = 357.62 × 161.86
  4. Step 4: Simplify right side
    238.93x = 57,884.37
  5. Step 5: Solve for x
    x = 57,884.37/238.93
  6. Step 6: Final answer
    x = 242.26

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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.