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Finding the Fourth Proportional to 158.33, 236.35 and 136.80

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Solution

The fourth proportional to 158.33, 236.35 and 136.80 is: 204.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.33 : 236.35 = 136.80 : x
  2. Step 2: Convert to fraction form
    158.33/236.35 = 136.80/x
  3. Step 3: Cross multiply
    158.33x = 236.35 × 136.80
  4. Step 4: Simplify right side
    158.33x = 32,333.87
  5. Step 5: Solve for x
    x = 32,333.87/158.33
  6. Step 6: Final answer
    x = 204.22

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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.