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Finding the Fourth Proportional to 173.17, 239.02 and 107.65

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Solution

The fourth proportional to 173.17, 239.02 and 107.65 is: 148.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.17 : 239.02 = 107.65 : x
  2. Step 2: Convert to fraction form
    173.17/239.02 = 107.65/x
  3. Step 3: Cross multiply
    173.17x = 239.02 × 107.65
  4. Step 4: Simplify right side
    173.17x = 25,730.50
  5. Step 5: Solve for x
    x = 25,730.50/173.17
  6. Step 6: Final answer
    x = 148.59

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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.