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Finding the Fourth Proportional to 134.96, 203.28 and 115.92

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Solution

The fourth proportional to 134.96, 203.28 and 115.92 is: 174.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.96 : 203.28 = 115.92 : x
  2. Step 2: Convert to fraction form
    134.96/203.28 = 115.92/x
  3. Step 3: Cross multiply
    134.96x = 203.28 × 115.92
  4. Step 4: Simplify right side
    134.96x = 23,564.22
  5. Step 5: Solve for x
    x = 23,564.22/134.96
  6. Step 6: Final answer
    x = 174.60

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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.