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Finding the Fourth Proportional to 255.46, 381.33 and 236.42

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Solution

The fourth proportional to 255.46, 381.33 and 236.42 is: 352.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.46 : 381.33 = 236.42 : x
  2. Step 2: Convert to fraction form
    255.46/381.33 = 236.42/x
  3. Step 3: Cross multiply
    255.46x = 381.33 × 236.42
  4. Step 4: Simplify right side
    255.46x = 90,154.04
  5. Step 5: Solve for x
    x = 90,154.04/255.46
  6. Step 6: Final answer
    x = 352.91

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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.