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Finding the Fourth Proportional to 233.18, 321.78 and 134.93

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Solution

The fourth proportional to 233.18, 321.78 and 134.93 is: 186.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.18 : 321.78 = 134.93 : x
  2. Step 2: Convert to fraction form
    233.18/321.78 = 134.93/x
  3. Step 3: Cross multiply
    233.18x = 321.78 × 134.93
  4. Step 4: Simplify right side
    233.18x = 43,419.09
  5. Step 5: Solve for x
    x = 43,419.09/233.18
  6. Step 6: Final answer
    x = 186.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.