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Finding the Fourth Proportional to 339.48, 468.33 and 199.61

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Solution

The fourth proportional to 339.48, 468.33 and 199.61 is: 275.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.48 : 468.33 = 199.61 : x
  2. Step 2: Convert to fraction form
    339.48/468.33 = 199.61/x
  3. Step 3: Cross multiply
    339.48x = 468.33 × 199.61
  4. Step 4: Simplify right side
    339.48x = 93,483.35
  5. Step 5: Solve for x
    x = 93,483.35/339.48
  6. Step 6: Final answer
    x = 275.37

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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.