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Finding the Fourth Proportional to 224.31, 309.87 and 213.51

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Solution

The fourth proportional to 224.31, 309.87 and 213.51 is: 294.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.31 : 309.87 = 213.51 : x
  2. Step 2: Convert to fraction form
    224.31/309.87 = 213.51/x
  3. Step 3: Cross multiply
    224.31x = 309.87 × 213.51
  4. Step 4: Simplify right side
    224.31x = 66,159.28
  5. Step 5: Solve for x
    x = 66,159.28/224.31
  6. Step 6: Final answer
    x = 294.95

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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.