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Finding the Fourth Proportional to 335.88, 505.88 and 255.29

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Solution

The fourth proportional to 335.88, 505.88 and 255.29 is: 384.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.88 : 505.88 = 255.29 : x
  2. Step 2: Convert to fraction form
    335.88/505.88 = 255.29/x
  3. Step 3: Cross multiply
    335.88x = 505.88 × 255.29
  4. Step 4: Simplify right side
    335.88x = 129,143.26
  5. Step 5: Solve for x
    x = 129,143.26/335.88
  6. Step 6: Final answer
    x = 384.49

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.