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Finding the Fourth Proportional to 238.95, 358.39 and 108.95

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Solution

The fourth proportional to 238.95, 358.39 and 108.95 is: 163.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.95 : 358.39 = 108.95 : x
  2. Step 2: Convert to fraction form
    238.95/358.39 = 108.95/x
  3. Step 3: Cross multiply
    238.95x = 358.39 × 108.95
  4. Step 4: Simplify right side
    238.95x = 39,044.93
  5. Step 5: Solve for x
    x = 39,044.93/238.95
  6. Step 6: Final answer
    x = 163.40

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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.