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Finding the Fourth Proportional to 171.46, 236.30 and 136.35

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Solution

The fourth proportional to 171.46, 236.30 and 136.35 is: 187.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.46 : 236.30 = 136.35 : x
  2. Step 2: Convert to fraction form
    171.46/236.30 = 136.35/x
  3. Step 3: Cross multiply
    171.46x = 236.30 × 136.35
  4. Step 4: Simplify right side
    171.46x = 32,218.31
  5. Step 5: Solve for x
    x = 32,218.31/171.46
  6. Step 6: Final answer
    x = 187.91

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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.