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Finding the Fourth Proportional to 173.00, 238.55 and 149.72

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Solution

The fourth proportional to 173.00, 238.55 and 149.72 is: 206.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.00 : 238.55 = 149.72 : x
  2. Step 2: Convert to fraction form
    173.00/238.55 = 149.72/x
  3. Step 3: Cross multiply
    173.00x = 238.55 × 149.72
  4. Step 4: Simplify right side
    173.00x = 35,713.76
  5. Step 5: Solve for x
    x = 35,713.76/173.00
  6. Step 6: Final answer
    x = 206.43

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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.