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Finding the Fourth Proportional to 224.30, 336.09 and 147.21

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Solution

The fourth proportional to 224.30, 336.09 and 147.21 is: 220.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.30 : 336.09 = 147.21 : x
  2. Step 2: Convert to fraction form
    224.30/336.09 = 147.21/x
  3. Step 3: Cross multiply
    224.30x = 336.09 × 147.21
  4. Step 4: Simplify right side
    224.30x = 49,475.23
  5. Step 5: Solve for x
    x = 49,475.23/224.30
  6. Step 6: Final answer
    x = 220.57

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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.