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Finding the Fourth Proportional to 339.52, 468.56 and 206.84

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Solution

The fourth proportional to 339.52, 468.56 and 206.84 is: 285.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.52 : 468.56 = 206.84 : x
  2. Step 2: Convert to fraction form
    339.52/468.56 = 206.84/x
  3. Step 3: Cross multiply
    339.52x = 468.56 × 206.84
  4. Step 4: Simplify right side
    339.52x = 96,916.95
  5. Step 5: Solve for x
    x = 96,916.95/339.52
  6. Step 6: Final answer
    x = 285.45

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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.