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Finding the Fourth Proportional to 339.74, 468.85 and 192.38

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Solution

The fourth proportional to 339.74, 468.85 and 192.38 is: 265.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.74 : 468.85 = 192.38 : x
  2. Step 2: Convert to fraction form
    339.74/468.85 = 192.38/x
  3. Step 3: Cross multiply
    339.74x = 468.85 × 192.38
  4. Step 4: Simplify right side
    339.74x = 90,197.36
  5. Step 5: Solve for x
    x = 90,197.36/339.74
  6. Step 6: Final answer
    x = 265.49

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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.