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Finding the Fourth Proportional to 239.12, 357.77 and 141.67

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Solution

The fourth proportional to 239.12, 357.77 and 141.67 is: 211.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.12 : 357.77 = 141.67 : x
  2. Step 2: Convert to fraction form
    239.12/357.77 = 141.67/x
  3. Step 3: Cross multiply
    239.12x = 357.77 × 141.67
  4. Step 4: Simplify right side
    239.12x = 50,686.08
  5. Step 5: Solve for x
    x = 50,686.08/239.12
  6. Step 6: Final answer
    x = 211.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.