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Finding the Fourth Proportional to 158.94, 236.79 and 149.63

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Solution

The fourth proportional to 158.94, 236.79 and 149.63 is: 222.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.94 : 236.79 = 149.63 : x
  2. Step 2: Convert to fraction form
    158.94/236.79 = 149.63/x
  3. Step 3: Cross multiply
    158.94x = 236.79 × 149.63
  4. Step 4: Simplify right side
    158.94x = 35,429.70
  5. Step 5: Solve for x
    x = 35,429.70/158.94
  6. Step 6: Final answer
    x = 222.91

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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.