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Finding the Fourth Proportional to 339.87, 469.05 and 192.53

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Solution

The fourth proportional to 339.87, 469.05 and 192.53 is: 265.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.87 : 469.05 = 192.53 : x
  2. Step 2: Convert to fraction form
    339.87/469.05 = 192.53/x
  3. Step 3: Cross multiply
    339.87x = 469.05 × 192.53
  4. Step 4: Simplify right side
    339.87x = 90,306.20
  5. Step 5: Solve for x
    x = 90,306.20/339.87
  6. Step 6: Final answer
    x = 265.71

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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.