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Finding the Fourth Proportional to 201.64, 300.57 and 188.65

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Solution

The fourth proportional to 201.64, 300.57 and 188.65 is: 281.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.64 : 300.57 = 188.65 : x
  2. Step 2: Convert to fraction form
    201.64/300.57 = 188.65/x
  3. Step 3: Cross multiply
    201.64x = 300.57 × 188.65
  4. Step 4: Simplify right side
    201.64x = 56,703.57
  5. Step 5: Solve for x
    x = 56,703.57/201.64
  6. Step 6: Final answer
    x = 281.21

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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.