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Finding the Fourth Proportional to 339.85, 469.00 and 192.49

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Solution

The fourth proportional to 339.85, 469.00 and 192.49 is: 265.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.85 : 469.00 = 192.49 : x
  2. Step 2: Convert to fraction form
    339.85/469.00 = 192.49/x
  3. Step 3: Cross multiply
    339.85x = 469.00 × 192.49
  4. Step 4: Simplify right side
    339.85x = 90,274.50
  5. Step 5: Solve for x
    x = 90,274.50/339.85
  6. Step 6: Final answer
    x = 265.63

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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.