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Finding the Fourth Proportional to 158.99, 236.79 and 148.97

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Solution

The fourth proportional to 158.99, 236.79 and 148.97 is: 221.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.99 : 236.79 = 148.97 : x
  2. Step 2: Convert to fraction form
    158.99/236.79 = 148.97/x
  3. Step 3: Cross multiply
    158.99x = 236.79 × 148.97
  4. Step 4: Simplify right side
    158.99x = 35,275.20
  5. Step 5: Solve for x
    x = 35,275.20/158.99
  6. Step 6: Final answer
    x = 221.88

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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.