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Finding the Fourth Proportional to 224.19, 336.54 and 137.76

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Solution

The fourth proportional to 224.19, 336.54 and 137.76 is: 206.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.19 : 336.54 = 137.76 : x
  2. Step 2: Convert to fraction form
    224.19/336.54 = 137.76/x
  3. Step 3: Cross multiply
    224.19x = 336.54 × 137.76
  4. Step 4: Simplify right side
    224.19x = 46,361.75
  5. Step 5: Solve for x
    x = 46,361.75/224.19
  6. Step 6: Final answer
    x = 206.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.