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Finding the Fourth Proportional to 339.61, 468.71 and 192.28

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Solution

The fourth proportional to 339.61, 468.71 and 192.28 is: 265.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.61 : 468.71 = 192.28 : x
  2. Step 2: Convert to fraction form
    339.61/468.71 = 192.28/x
  3. Step 3: Cross multiply
    339.61x = 468.71 × 192.28
  4. Step 4: Simplify right side
    339.61x = 90,123.56
  5. Step 5: Solve for x
    x = 90,123.56/339.61
  6. Step 6: Final answer
    x = 265.37

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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.