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Finding the Fourth Proportional to 199.87, 275.50 and 150.66

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Solution

The fourth proportional to 199.87, 275.50 and 150.66 is: 207.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    199.87 : 275.50 = 150.66 : x
  2. Step 2: Convert to fraction form
    199.87/275.50 = 150.66/x
  3. Step 3: Cross multiply
    199.87x = 275.50 × 150.66
  4. Step 4: Simplify right side
    199.87x = 41,507.02
  5. Step 5: Solve for x
    x = 41,507.02/199.87
  6. Step 6: Final answer
    x = 207.67

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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.