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Finding the Fourth Proportional to 238.58, 328.86 and 194.50

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Solution

The fourth proportional to 238.58, 328.86 and 194.50 is: 268.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.58 : 328.86 = 194.50 : x
  2. Step 2: Convert to fraction form
    238.58/328.86 = 194.50/x
  3. Step 3: Cross multiply
    238.58x = 328.86 × 194.50
  4. Step 4: Simplify right side
    238.58x = 63,963.68
  5. Step 5: Solve for x
    x = 63,963.68/238.58
  6. Step 6: Final answer
    x = 268.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.