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Finding the Fourth Proportional to 163.18, 245.87 and 134.93

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Solution

The fourth proportional to 163.18, 245.87 and 134.93 is: 203.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    163.18 : 245.87 = 134.93 : x
  2. Step 2: Convert to fraction form
    163.18/245.87 = 134.93/x
  3. Step 3: Cross multiply
    163.18x = 245.87 × 134.93
  4. Step 4: Simplify right side
    163.18x = 33,174.30
  5. Step 5: Solve for x
    x = 33,174.30/163.18
  6. Step 6: Final answer
    x = 203.30

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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.