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Finding the Fourth Proportional to 173.01, 238.77 and 129.27

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Solution

The fourth proportional to 173.01, 238.77 and 129.27 is: 178.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.01 : 238.77 = 129.27 : x
  2. Step 2: Convert to fraction form
    173.01/238.77 = 129.27/x
  3. Step 3: Cross multiply
    173.01x = 238.77 × 129.27
  4. Step 4: Simplify right side
    173.01x = 30,865.80
  5. Step 5: Solve for x
    x = 30,865.80/173.01
  6. Step 6: Final answer
    x = 178.40

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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.