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Finding the Fourth Proportional to 201.05, 299.54 and 188.63

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Solution

The fourth proportional to 201.05, 299.54 and 188.63 is: 281.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.05 : 299.54 = 188.63 : x
  2. Step 2: Convert to fraction form
    201.05/299.54 = 188.63/x
  3. Step 3: Cross multiply
    201.05x = 299.54 × 188.63
  4. Step 4: Simplify right side
    201.05x = 56,499.79
  5. Step 5: Solve for x
    x = 56,499.79/201.05
  6. Step 6: Final answer
    x = 281.03

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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.