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Finding the Fourth Proportional to 149.07, 222.59 and 133.55

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Solution

The fourth proportional to 149.07, 222.59 and 133.55 is: 199.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.07 : 222.59 = 133.55 : x
  2. Step 2: Convert to fraction form
    149.07/222.59 = 133.55/x
  3. Step 3: Cross multiply
    149.07x = 222.59 × 133.55
  4. Step 4: Simplify right side
    149.07x = 29,725.11
  5. Step 5: Solve for x
    x = 29,725.11/149.07
  6. Step 6: Final answer
    x = 199.40

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.