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Finding the Fourth Proportional to 175.25, 261.61 and 149.13

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Solution

The fourth proportional to 175.25, 261.61 and 149.13 is: 222.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    175.25 : 261.61 = 149.13 : x
  2. Step 2: Convert to fraction form
    175.25/261.61 = 149.13/x
  3. Step 3: Cross multiply
    175.25x = 261.61 × 149.13
  4. Step 4: Simplify right side
    175.25x = 39,013.53
  5. Step 5: Solve for x
    x = 39,013.53/175.25
  6. Step 6: Final answer
    x = 222.61

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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.