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Finding the Fourth Proportional to 236.03, 351.70 and 211.79

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Solution

The fourth proportional to 236.03, 351.70 and 211.79 is: 315.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.03 : 351.70 = 211.79 : x
  2. Step 2: Convert to fraction form
    236.03/351.70 = 211.79/x
  3. Step 3: Cross multiply
    236.03x = 351.70 × 211.79
  4. Step 4: Simplify right side
    236.03x = 74,486.89
  5. Step 5: Solve for x
    x = 74,486.89/236.03
  6. Step 6: Final answer
    x = 315.59

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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.