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Finding the Fourth Proportional to 255.64, 383.25 and 132.11

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Solution

The fourth proportional to 255.64, 383.25 and 132.11 is: 198.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.64 : 383.25 = 132.11 : x
  2. Step 2: Convert to fraction form
    255.64/383.25 = 132.11/x
  3. Step 3: Cross multiply
    255.64x = 383.25 × 132.11
  4. Step 4: Simplify right side
    255.64x = 50,631.16
  5. Step 5: Solve for x
    x = 50,631.16/255.64
  6. Step 6: Final answer
    x = 198.06

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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.