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Finding the Fourth Proportional to 187.92, 258.93 and 144.18

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Solution

The fourth proportional to 187.92, 258.93 and 144.18 is: 198.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    187.92 : 258.93 = 144.18 : x
  2. Step 2: Convert to fraction form
    187.92/258.93 = 144.18/x
  3. Step 3: Cross multiply
    187.92x = 258.93 × 144.18
  4. Step 4: Simplify right side
    187.92x = 37,332.53
  5. Step 5: Solve for x
    x = 37,332.53/187.92
  6. Step 6: Final answer
    x = 198.66

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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.