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Finding the Fourth Proportional to 163.45, 245.16 and 94.93

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Solution

The fourth proportional to 163.45, 245.16 and 94.93 is: 142.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    163.45 : 245.16 = 94.93 : x
  2. Step 2: Convert to fraction form
    163.45/245.16 = 94.93/x
  3. Step 3: Cross multiply
    163.45x = 245.16 × 94.93
  4. Step 4: Simplify right side
    163.45x = 23,273.04
  5. Step 5: Solve for x
    x = 23,273.04/163.45
  6. Step 6: Final answer
    x = 142.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.