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Finding the Fourth Proportional to 171.54, 236.90 and 146.84

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Solution

The fourth proportional to 171.54, 236.90 and 146.84 is: 202.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.54 : 236.90 = 146.84 : x
  2. Step 2: Convert to fraction form
    171.54/236.90 = 146.84/x
  3. Step 3: Cross multiply
    171.54x = 236.90 × 146.84
  4. Step 4: Simplify right side
    171.54x = 34,784.48
  5. Step 5: Solve for x
    x = 34,784.48/171.54
  6. Step 6: Final answer
    x = 202.78

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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.