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Finding the Fourth Proportional to 255, 381.96 and 234

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Solution

The fourth proportional to 255, 381.96 and 234 is: 350.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    255 : 381.96 = 234 : x
  2. Step 2: Convert to fraction form
    255/381.96 = 234/x
  3. Step 3: Cross multiply
    255x = 381.96 × 234
  4. Step 4: Simplify right side
    255x = 89,378.64
  5. Step 5: Solve for x
    x = 89,378.64/255
  6. Step 6: Final answer
    x = 350.50

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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.