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Finding the Fourth Proportional to 255.15, 351.23 and 192.88

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Solution

The fourth proportional to 255.15, 351.23 and 192.88 is: 265.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.15 : 351.23 = 192.88 : x
  2. Step 2: Convert to fraction form
    255.15/351.23 = 192.88/x
  3. Step 3: Cross multiply
    255.15x = 351.23 × 192.88
  4. Step 4: Simplify right side
    255.15x = 67,745.24
  5. Step 5: Solve for x
    x = 67,745.24/255.15
  6. Step 6: Final answer
    x = 265.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.