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Finding the Fourth Proportional to 224.24, 309.30 and 141.45

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Solution

The fourth proportional to 224.24, 309.30 and 141.45 is: 195.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.24 : 309.30 = 141.45 : x
  2. Step 2: Convert to fraction form
    224.24/309.30 = 141.45/x
  3. Step 3: Cross multiply
    224.24x = 309.30 × 141.45
  4. Step 4: Simplify right side
    224.24x = 43,750.49
  5. Step 5: Solve for x
    x = 43,750.49/224.24
  6. Step 6: Final answer
    x = 195.11

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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.