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Finding the Fourth Proportional to 192.62, 289.08 and 149.40

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Solution

The fourth proportional to 192.62, 289.08 and 149.40 is: 224.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.62 : 289.08 = 149.40 : x
  2. Step 2: Convert to fraction form
    192.62/289.08 = 149.40/x
  3. Step 3: Cross multiply
    192.62x = 289.08 × 149.40
  4. Step 4: Simplify right side
    192.62x = 43,188.55
  5. Step 5: Solve for x
    x = 43,188.55/192.62
  6. Step 6: Final answer
    x = 224.21

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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.