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Finding the Fourth Proportional to 173.89, 240.07 and 138.38

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Solution

The fourth proportional to 173.89, 240.07 and 138.38 is: 191.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.89 : 240.07 = 138.38 : x
  2. Step 2: Convert to fraction form
    173.89/240.07 = 138.38/x
  3. Step 3: Cross multiply
    173.89x = 240.07 × 138.38
  4. Step 4: Simplify right side
    173.89x = 33,219.17
  5. Step 5: Solve for x
    x = 33,219.17/173.89
  6. Step 6: Final answer
    x = 191.03

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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.