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Finding the Fourth Proportional to 149.45, 224.22 and 62.79

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Solution

The fourth proportional to 149.45, 224.22 and 62.79 is: 94.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.45 : 224.22 = 62.79 : x
  2. Step 2: Convert to fraction form
    149.45/224.22 = 62.79/x
  3. Step 3: Cross multiply
    149.45x = 224.22 × 62.79
  4. Step 4: Simplify right side
    149.45x = 14,078.77
  5. Step 5: Solve for x
    x = 14,078.77/149.45
  6. Step 6: Final answer
    x = 94.21

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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.