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Finding the Fourth Proportional to 149.95, 207.09 and 133.55

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Solution

The fourth proportional to 149.95, 207.09 and 133.55 is: 184.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.95 : 207.09 = 133.55 : x
  2. Step 2: Convert to fraction form
    149.95/207.09 = 133.55/x
  3. Step 3: Cross multiply
    149.95x = 207.09 × 133.55
  4. Step 4: Simplify right side
    149.95x = 27,655.83
  5. Step 5: Solve for x
    x = 27,655.83/149.95
  6. Step 6: Final answer
    x = 184.44

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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.