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Finding the Fourth Proportional to 339.34, 468.31 and 208.33

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Solution

The fourth proportional to 339.34, 468.31 and 208.33 is: 287.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.34 : 468.31 = 208.33 : x
  2. Step 2: Convert to fraction form
    339.34/468.31 = 208.33/x
  3. Step 3: Cross multiply
    339.34x = 468.31 × 208.33
  4. Step 4: Simplify right side
    339.34x = 97,563.02
  5. Step 5: Solve for x
    x = 97,563.02/339.34
  6. Step 6: Final answer
    x = 287.51

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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.