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Finding the Fourth Proportional to 239.85, 357.96 and 233.70

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Solution

The fourth proportional to 239.85, 357.96 and 233.70 is: 348.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.85 : 357.96 = 233.70 : x
  2. Step 2: Convert to fraction form
    239.85/357.96 = 233.70/x
  3. Step 3: Cross multiply
    239.85x = 357.96 × 233.70
  4. Step 4: Simplify right side
    239.85x = 83,655.25
  5. Step 5: Solve for x
    x = 83,655.25/239.85
  6. Step 6: Final answer
    x = 348.78

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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.