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Finding the Fourth Proportional to 173.25, 258.53 and 155.03

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Solution

The fourth proportional to 173.25, 258.53 and 155.03 is: 231.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.25 : 258.53 = 155.03 : x
  2. Step 2: Convert to fraction form
    173.25/258.53 = 155.03/x
  3. Step 3: Cross multiply
    173.25x = 258.53 × 155.03
  4. Step 4: Simplify right side
    173.25x = 40,077.84
  5. Step 5: Solve for x
    x = 40,077.84/173.25
  6. Step 6: Final answer
    x = 231.33

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.