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Finding the Fourth Proportional to 224.31, 309.07 and 192.79

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Solution

The fourth proportional to 224.31, 309.07 and 192.79 is: 265.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.31 : 309.07 = 192.79 : x
  2. Step 2: Convert to fraction form
    224.31/309.07 = 192.79/x
  3. Step 3: Cross multiply
    224.31x = 309.07 × 192.79
  4. Step 4: Simplify right side
    224.31x = 59,585.61
  5. Step 5: Solve for x
    x = 59,585.61/224.31
  6. Step 6: Final answer
    x = 265.64

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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.