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Finding the Fourth Proportional to 101.95, 153.55 and 92.61

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Solution

The fourth proportional to 101.95, 153.55 and 92.61 is: 139.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    101.95 : 153.55 = 92.61 : x
  2. Step 2: Convert to fraction form
    101.95/153.55 = 92.61/x
  3. Step 3: Cross multiply
    101.95x = 153.55 × 92.61
  4. Step 4: Simplify right side
    101.95x = 14,219.21
  5. Step 5: Solve for x
    x = 14,219.21/101.95
  6. Step 6: Final answer
    x = 139.48

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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.