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Finding the Fourth Proportional to 357.39, 492.92 and 233.09

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Solution

The fourth proportional to 357.39, 492.92 and 233.09 is: 321.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.39 : 492.92 = 233.09 : x
  2. Step 2: Convert to fraction form
    357.39/492.92 = 233.09/x
  3. Step 3: Cross multiply
    357.39x = 492.92 × 233.09
  4. Step 4: Simplify right side
    357.39x = 114,893.82
  5. Step 5: Solve for x
    x = 114,893.82/357.39
  6. Step 6: Final answer
    x = 321.48

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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.