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Finding the Fourth Proportional to 254.98, 351.84 and 192.81

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Solution

The fourth proportional to 254.98, 351.84 and 192.81 is: 266.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.98 : 351.84 = 192.81 : x
  2. Step 2: Convert to fraction form
    254.98/351.84 = 192.81/x
  3. Step 3: Cross multiply
    254.98x = 351.84 × 192.81
  4. Step 4: Simplify right side
    254.98x = 67,840.31
  5. Step 5: Solve for x
    x = 67,840.31/254.98
  6. Step 6: Final answer
    x = 266.06

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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.