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Finding the Fourth Proportional to 339.45, 468.43 and 223

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Solution

The fourth proportional to 339.45, 468.43 and 223 is: 307.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.45 : 468.43 = 223 : x
  2. Step 2: Convert to fraction form
    339.45/468.43 = 223/x
  3. Step 3: Cross multiply
    339.45x = 468.43 × 223
  4. Step 4: Simplify right side
    339.45x = 104,459.89
  5. Step 5: Solve for x
    x = 104,459.89/339.45
  6. Step 6: Final answer
    x = 307.73

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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.