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Finding the Fourth Proportional to 134.22, 202.37 and 129.18

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Solution

The fourth proportional to 134.22, 202.37 and 129.18 is: 194.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.22 : 202.37 = 129.18 : x
  2. Step 2: Convert to fraction form
    134.22/202.37 = 129.18/x
  3. Step 3: Cross multiply
    134.22x = 202.37 × 129.18
  4. Step 4: Simplify right side
    134.22x = 26,141.51
  5. Step 5: Solve for x
    x = 26,141.51/134.22
  6. Step 6: Final answer
    x = 194.77

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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.