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Finding the Fourth Proportional to 76.54, 114.22 and 68.33

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Solution

The fourth proportional to 76.54, 114.22 and 68.33 is: 101.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    76.54 : 114.22 = 68.33 : x
  2. Step 2: Convert to fraction form
    76.54/114.22 = 68.33/x
  3. Step 3: Cross multiply
    76.54x = 114.22 × 68.33
  4. Step 4: Simplify right side
    76.54x = 7,804.08
  5. Step 5: Solve for x
    x = 7,804.08/76.54
  6. Step 6: Final answer
    x = 101.96

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.