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Finding the Fourth Proportional to 239.89, 357.32 and 236.70

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Solution

The fourth proportional to 239.89, 357.32 and 236.70 is: 352.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.89 : 357.32 = 236.70 : x
  2. Step 2: Convert to fraction form
    239.89/357.32 = 236.70/x
  3. Step 3: Cross multiply
    239.89x = 357.32 × 236.70
  4. Step 4: Simplify right side
    239.89x = 84,577.56
  5. Step 5: Solve for x
    x = 84,577.56/239.89
  6. Step 6: Final answer
    x = 352.57

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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.