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Finding the Fourth Proportional to 173.93, 239.90 and 108.45

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Solution

The fourth proportional to 173.93, 239.90 and 108.45 is: 149.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.93 : 239.90 = 108.45 : x
  2. Step 2: Convert to fraction form
    173.93/239.90 = 108.45/x
  3. Step 3: Cross multiply
    173.93x = 239.90 × 108.45
  4. Step 4: Simplify right side
    173.93x = 26,016.61
  5. Step 5: Solve for x
    x = 26,016.61/173.93
  6. Step 6: Final answer
    x = 149.59

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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.