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Finding the Fourth Proportional to 251.94, 378.27 and 130.32

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Solution

The fourth proportional to 251.94, 378.27 and 130.32 is: 195.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.94 : 378.27 = 130.32 : x
  2. Step 2: Convert to fraction form
    251.94/378.27 = 130.32/x
  3. Step 3: Cross multiply
    251.94x = 378.27 × 130.32
  4. Step 4: Simplify right side
    251.94x = 49,296.15
  5. Step 5: Solve for x
    x = 49,296.15/251.94
  6. Step 6: Final answer
    x = 195.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.