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Finding the Fourth Proportional to 236.84, 352.45 and 228.20

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Solution

The fourth proportional to 236.84, 352.45 and 228.20 is: 339.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.84 : 352.45 = 228.20 : x
  2. Step 2: Convert to fraction form
    236.84/352.45 = 228.20/x
  3. Step 3: Cross multiply
    236.84x = 352.45 × 228.20
  4. Step 4: Simplify right side
    236.84x = 80,427.61
  5. Step 5: Solve for x
    x = 80,427.61/236.84
  6. Step 6: Final answer
    x = 339.59

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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.