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Finding the Fourth Proportional to 238.72, 358.12 and 238.44

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Solution

The fourth proportional to 238.72, 358.12 and 238.44 is: 357.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.72 : 358.12 = 238.44 : x
  2. Step 2: Convert to fraction form
    238.72/358.12 = 238.44/x
  3. Step 3: Cross multiply
    238.72x = 358.12 × 238.44
  4. Step 4: Simplify right side
    238.72x = 85,390.13
  5. Step 5: Solve for x
    x = 85,390.13/238.72
  6. Step 6: Final answer
    x = 357.70

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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.