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Finding the Fourth Proportional to 238.50, 329.13 and 151.16

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Solution

The fourth proportional to 238.50, 329.13 and 151.16 is: 208.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.50 : 329.13 = 151.16 : x
  2. Step 2: Convert to fraction form
    238.50/329.13 = 151.16/x
  3. Step 3: Cross multiply
    238.50x = 329.13 × 151.16
  4. Step 4: Simplify right side
    238.50x = 49,749.65
  5. Step 5: Solve for x
    x = 49,749.65/238.50
  6. Step 6: Final answer
    x = 208.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.