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Finding the Fourth Proportional to 254.94, 351.81 and 166.45

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Solution

The fourth proportional to 254.94, 351.81 and 166.45 is: 229.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.94 : 351.81 = 166.45 : x
  2. Step 2: Convert to fraction form
    254.94/351.81 = 166.45/x
  3. Step 3: Cross multiply
    254.94x = 351.81 × 166.45
  4. Step 4: Simplify right side
    254.94x = 58,558.77
  5. Step 5: Solve for x
    x = 58,558.77/254.94
  6. Step 6: Final answer
    x = 229.70

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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.