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Finding the Fourth Proportional to 173.03, 239.21 and 165.74

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Solution

The fourth proportional to 173.03, 239.21 and 165.74 is: 229.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.03 : 239.21 = 165.74 : x
  2. Step 2: Convert to fraction form
    173.03/239.21 = 165.74/x
  3. Step 3: Cross multiply
    173.03x = 239.21 × 165.74
  4. Step 4: Simplify right side
    173.03x = 39,644.64
  5. Step 5: Solve for x
    x = 39,644.64/173.03
  6. Step 6: Final answer
    x = 229.13

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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.