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Finding the Fourth Proportional to 238.05, 356.99 and 75.69

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Solution

The fourth proportional to 238.05, 356.99 and 75.69 is: 113.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.05 : 356.99 = 75.69 : x
  2. Step 2: Convert to fraction form
    238.05/356.99 = 75.69/x
  3. Step 3: Cross multiply
    238.05x = 356.99 × 75.69
  4. Step 4: Simplify right side
    238.05x = 27,020.19
  5. Step 5: Solve for x
    x = 27,020.19/238.05
  6. Step 6: Final answer
    x = 113.51

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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.