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Finding the Fourth Proportional to 336.78, 504.48 and 255.37

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Solution

The fourth proportional to 336.78, 504.48 and 255.37 is: 382.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.78 : 504.48 = 255.37 : x
  2. Step 2: Convert to fraction form
    336.78/504.48 = 255.37/x
  3. Step 3: Cross multiply
    336.78x = 504.48 × 255.37
  4. Step 4: Simplify right side
    336.78x = 128,829.06
  5. Step 5: Solve for x
    x = 128,829.06/336.78
  6. Step 6: Final answer
    x = 382.53

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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.