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Finding the Fourth Proportional to 224.56, 334.78 and 207.28

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Solution

The fourth proportional to 224.56, 334.78 and 207.28 is: 309.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.56 : 334.78 = 207.28 : x
  2. Step 2: Convert to fraction form
    224.56/334.78 = 207.28/x
  3. Step 3: Cross multiply
    224.56x = 334.78 × 207.28
  4. Step 4: Simplify right side
    224.56x = 69,393.20
  5. Step 5: Solve for x
    x = 69,393.20/224.56
  6. Step 6: Final answer
    x = 309.02

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.