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Finding the Fourth Proportional to 236.70, 328.59 and 222.12

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Solution

The fourth proportional to 236.70, 328.59 and 222.12 is: 308.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.70 : 328.59 = 222.12 : x
  2. Step 2: Convert to fraction form
    236.70/328.59 = 222.12/x
  3. Step 3: Cross multiply
    236.70x = 328.59 × 222.12
  4. Step 4: Simplify right side
    236.70x = 72,986.41
  5. Step 5: Solve for x
    x = 72,986.41/236.70
  6. Step 6: Final answer
    x = 308.35

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.