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Finding the Fourth Proportional to 339.44, 468.06 and 222.80

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Solution

The fourth proportional to 339.44, 468.06 and 222.80 is: 307.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.44 : 468.06 = 222.80 : x
  2. Step 2: Convert to fraction form
    339.44/468.06 = 222.80/x
  3. Step 3: Cross multiply
    339.44x = 468.06 × 222.80
  4. Step 4: Simplify right side
    339.44x = 104,283.77
  5. Step 5: Solve for x
    x = 104,283.77/339.44
  6. Step 6: Final answer
    x = 307.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.