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Finding the Fourth Proportional to 92.44, 125.92 and 90.64

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Solution

The fourth proportional to 92.44, 125.92 and 90.64 is: 123.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    92.44 : 125.92 = 90.64 : x
  2. Step 2: Convert to fraction form
    92.44/125.92 = 90.64/x
  3. Step 3: Cross multiply
    92.44x = 125.92 × 90.64
  4. Step 4: Simplify right side
    92.44x = 11,413.39
  5. Step 5: Solve for x
    x = 11,413.39/92.44
  6. Step 6: Final answer
    x = 123.47

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.