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Finding the Fourth Proportional to 339.70, 468.80 and 192.34

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Solution

The fourth proportional to 339.70, 468.80 and 192.34 is: 265.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.70 : 468.80 = 192.34 : x
  2. Step 2: Convert to fraction form
    339.70/468.80 = 192.34/x
  3. Step 3: Cross multiply
    339.70x = 468.80 × 192.34
  4. Step 4: Simplify right side
    339.70x = 90,168.99
  5. Step 5: Solve for x
    x = 90,168.99/339.70
  6. Step 6: Final answer
    x = 265.44

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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.