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Finding the Fourth Proportional to 173.67, 260.50 and 128.24

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Solution

The fourth proportional to 173.67, 260.50 and 128.24 is: 192.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.67 : 260.50 = 128.24 : x
  2. Step 2: Convert to fraction form
    173.67/260.50 = 128.24/x
  3. Step 3: Cross multiply
    173.67x = 260.50 × 128.24
  4. Step 4: Simplify right side
    173.67x = 33,406.35
  5. Step 5: Solve for x
    x = 33,406.35/173.67
  6. Step 6: Final answer
    x = 192.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.