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Finding the Fourth Proportional to 187.95, 258.75 and 173.91

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Solution

The fourth proportional to 187.95, 258.75 and 173.91 is: 239.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    187.95 : 258.75 = 173.91 : x
  2. Step 2: Convert to fraction form
    187.95/258.75 = 173.91/x
  3. Step 3: Cross multiply
    187.95x = 258.75 × 173.91
  4. Step 4: Simplify right side
    187.95x = 44,999.21
  5. Step 5: Solve for x
    x = 44,999.21/187.95
  6. Step 6: Final answer
    x = 239.42

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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.