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Finding the Fourth Proportional to 239.13, 329.79 and 237.93

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Solution

The fourth proportional to 239.13, 329.79 and 237.93 is: 328.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.13 : 329.79 = 237.93 : x
  2. Step 2: Convert to fraction form
    239.13/329.79 = 237.93/x
  3. Step 3: Cross multiply
    239.13x = 329.79 × 237.93
  4. Step 4: Simplify right side
    239.13x = 78,466.93
  5. Step 5: Solve for x
    x = 78,466.93/239.13
  6. Step 6: Final answer
    x = 328.14

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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.