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Finding the Fourth Proportional to 158.28, 238.62 and 147.84

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Solution

The fourth proportional to 158.28, 238.62 and 147.84 is: 222.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.28 : 238.62 = 147.84 : x
  2. Step 2: Convert to fraction form
    158.28/238.62 = 147.84/x
  3. Step 3: Cross multiply
    158.28x = 238.62 × 147.84
  4. Step 4: Simplify right side
    158.28x = 35,277.58
  5. Step 5: Solve for x
    x = 35,277.58/158.28
  6. Step 6: Final answer
    x = 222.88

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.