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Finding the Fourth Proportional to 236.56, 352.90 and 228.15

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Solution

The fourth proportional to 236.56, 352.90 and 228.15 is: 340.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.56 : 352.90 = 228.15 : x
  2. Step 2: Convert to fraction form
    236.56/352.90 = 228.15/x
  3. Step 3: Cross multiply
    236.56x = 352.90 × 228.15
  4. Step 4: Simplify right side
    236.56x = 80,514.14
  5. Step 5: Solve for x
    x = 80,514.14/236.56
  6. Step 6: Final answer
    x = 340.35

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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.