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Finding the Fourth Proportional to 325.95, 485.78 and 325.44

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Solution

The fourth proportional to 325.95, 485.78 and 325.44 is: 485.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.95 : 485.78 = 325.44 : x
  2. Step 2: Convert to fraction form
    325.95/485.78 = 325.44/x
  3. Step 3: Cross multiply
    325.95x = 485.78 × 325.44
  4. Step 4: Simplify right side
    325.95x = 158,092.24
  5. Step 5: Solve for x
    x = 158,092.24/325.95
  6. Step 6: Final answer
    x = 485.02

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.