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Finding the Fourth Proportional to 254.90, 351.81 and 192.94

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Solution

The fourth proportional to 254.90, 351.81 and 192.94 is: 266.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.90 : 351.81 = 192.94 : x
  2. Step 2: Convert to fraction form
    254.90/351.81 = 192.94/x
  3. Step 3: Cross multiply
    254.90x = 351.81 × 192.94
  4. Step 4: Simplify right side
    254.90x = 67,877.34
  5. Step 5: Solve for x
    x = 67,877.34/254.90
  6. Step 6: Final answer
    x = 266.29

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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.