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Finding the Fourth Proportional to 234.09, 322.97 and 135.77

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Solution

The fourth proportional to 234.09, 322.97 and 135.77 is: 187.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.09 : 322.97 = 135.77 : x
  2. Step 2: Convert to fraction form
    234.09/322.97 = 135.77/x
  3. Step 3: Cross multiply
    234.09x = 322.97 × 135.77
  4. Step 4: Simplify right side
    234.09x = 43,847.34
  5. Step 5: Solve for x
    x = 43,847.34/234.09
  6. Step 6: Final answer
    x = 187.31

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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.