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Finding the Fourth Proportional to 239.36, 360.45 and 223.16

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Solution

The fourth proportional to 239.36, 360.45 and 223.16 is: 336.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.36 : 360.45 = 223.16 : x
  2. Step 2: Convert to fraction form
    239.36/360.45 = 223.16/x
  3. Step 3: Cross multiply
    239.36x = 360.45 × 223.16
  4. Step 4: Simplify right side
    239.36x = 80,436.22
  5. Step 5: Solve for x
    x = 80,436.22/239.36
  6. Step 6: Final answer
    x = 336.05

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.