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Finding the Fourth Proportional to 395.25, 548.26 and 374.49

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Solution

The fourth proportional to 395.25, 548.26 and 374.49 is: 519.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.25 : 548.26 = 374.49 : x
  2. Step 2: Convert to fraction form
    395.25/548.26 = 374.49/x
  3. Step 3: Cross multiply
    395.25x = 548.26 × 374.49
  4. Step 4: Simplify right side
    395.25x = 205,317.89
  5. Step 5: Solve for x
    x = 205,317.89/395.25
  6. Step 6: Final answer
    x = 519.46

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.