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Finding the Fourth Proportional to 238.14, 328.68 and 144.95

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Solution

The fourth proportional to 238.14, 328.68 and 144.95 is: 200.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.14 : 328.68 = 144.95 : x
  2. Step 2: Convert to fraction form
    238.14/328.68 = 144.95/x
  3. Step 3: Cross multiply
    238.14x = 328.68 × 144.95
  4. Step 4: Simplify right side
    238.14x = 47,640.52
  5. Step 5: Solve for x
    x = 47,640.52/238.14
  6. Step 6: Final answer
    x = 200.05

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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.