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Finding the Fourth Proportional to 239.87, 328.08 and 236.09

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Solution

The fourth proportional to 239.87, 328.08 and 236.09 is: 322.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.87 : 328.08 = 236.09 : x
  2. Step 2: Convert to fraction form
    239.87/328.08 = 236.09/x
  3. Step 3: Cross multiply
    239.87x = 328.08 × 236.09
  4. Step 4: Simplify right side
    239.87x = 77,454.77
  5. Step 5: Solve for x
    x = 77,454.77/239.87
  6. Step 6: Final answer
    x = 322.91

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.