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Finding the Fourth Proportional to 238.14, 355.62 and 194.88

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Solution

The fourth proportional to 238.14, 355.62 and 194.88 is: 291.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.14 : 355.62 = 194.88 : x
  2. Step 2: Convert to fraction form
    238.14/355.62 = 194.88/x
  3. Step 3: Cross multiply
    238.14x = 355.62 × 194.88
  4. Step 4: Simplify right side
    238.14x = 69,303.23
  5. Step 5: Solve for x
    x = 69,303.23/238.14
  6. Step 6: Final answer
    x = 291.02

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.