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Finding the Fourth Proportional to 84.73, 117.03 and 68.32

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Solution

The fourth proportional to 84.73, 117.03 and 68.32 is: 94.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    84.73 : 117.03 = 68.32 : x
  2. Step 2: Convert to fraction form
    84.73/117.03 = 68.32/x
  3. Step 3: Cross multiply
    84.73x = 117.03 × 68.32
  4. Step 4: Simplify right side
    84.73x = 7,995.49
  5. Step 5: Solve for x
    x = 7,995.49/84.73
  6. Step 6: Final answer
    x = 94.36

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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.