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Finding the Fourth Proportional to 224.54, 309.30 and 187.68

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Solution

The fourth proportional to 224.54, 309.30 and 187.68 is: 258.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.54 : 309.30 = 187.68 : x
  2. Step 2: Convert to fraction form
    224.54/309.30 = 187.68/x
  3. Step 3: Cross multiply
    224.54x = 309.30 × 187.68
  4. Step 4: Simplify right side
    224.54x = 58,049.42
  5. Step 5: Solve for x
    x = 58,049.42/224.54
  6. Step 6: Final answer
    x = 258.53

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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.