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Finding the Fourth Proportional to 92.95, 127.55 and 84.73

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Solution

The fourth proportional to 92.95, 127.55 and 84.73 is: 116.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    92.95 : 127.55 = 84.73 : x
  2. Step 2: Convert to fraction form
    92.95/127.55 = 84.73/x
  3. Step 3: Cross multiply
    92.95x = 127.55 × 84.73
  4. Step 4: Simplify right side
    92.95x = 10,807.31
  5. Step 5: Solve for x
    x = 10,807.31/92.95
  6. Step 6: Final answer
    x = 116.27

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.