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Finding the Fourth Proportional to 92.39, 139.25 and 88.27

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Solution

The fourth proportional to 92.39, 139.25 and 88.27 is: 133.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    92.39 : 139.25 = 88.27 : x
  2. Step 2: Convert to fraction form
    92.39/139.25 = 88.27/x
  3. Step 3: Cross multiply
    92.39x = 139.25 × 88.27
  4. Step 4: Simplify right side
    92.39x = 12,291.60
  5. Step 5: Solve for x
    x = 12,291.60/92.39
  6. Step 6: Final answer
    x = 133.04

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.