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Finding the Fourth Proportional to 173.07, 239.90 and 170.64

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Solution

The fourth proportional to 173.07, 239.90 and 170.64 is: 236.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.07 : 239.90 = 170.64 : x
  2. Step 2: Convert to fraction form
    173.07/239.90 = 170.64/x
  3. Step 3: Cross multiply
    173.07x = 239.90 × 170.64
  4. Step 4: Simplify right side
    173.07x = 40,935.68
  5. Step 5: Solve for x
    x = 40,935.68/173.07
  6. Step 6: Final answer
    x = 236.53

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.