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Finding the Fourth Proportional to 239.36, 359.22 and 230.72

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Solution

The fourth proportional to 239.36, 359.22 and 230.72 is: 346.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.36 : 359.22 = 230.72 : x
  2. Step 2: Convert to fraction form
    239.36/359.22 = 230.72/x
  3. Step 3: Cross multiply
    239.36x = 359.22 × 230.72
  4. Step 4: Simplify right side
    239.36x = 82,879.24
  5. Step 5: Solve for x
    x = 82,879.24/239.36
  6. Step 6: Final answer
    x = 346.25

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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.