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Finding the Fourth Proportional to 173.45, 238.07 and 154.62

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Solution

The fourth proportional to 173.45, 238.07 and 154.62 is: 212.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.45 : 238.07 = 154.62 : x
  2. Step 2: Convert to fraction form
    173.45/238.07 = 154.62/x
  3. Step 3: Cross multiply
    173.45x = 238.07 × 154.62
  4. Step 4: Simplify right side
    173.45x = 36,810.77
  5. Step 5: Solve for x
    x = 36,810.77/173.45
  6. Step 6: Final answer
    x = 212.22

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.