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Finding the Fourth Proportional to 234.67, 349.29 and 228.19

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Solution

The fourth proportional to 234.67, 349.29 and 228.19 is: 339.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.67 : 349.29 = 228.19 : x
  2. Step 2: Convert to fraction form
    234.67/349.29 = 228.19/x
  3. Step 3: Cross multiply
    234.67x = 349.29 × 228.19
  4. Step 4: Simplify right side
    234.67x = 79,704.49
  5. Step 5: Solve for x
    x = 79,704.49/234.67
  6. Step 6: Final answer
    x = 339.64

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.