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Finding the Fourth Proportional to 325.01, 489.90 and 306.19

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Solution

The fourth proportional to 325.01, 489.90 and 306.19 is: 461.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.01 : 489.90 = 306.19 : x
  2. Step 2: Convert to fraction form
    325.01/489.90 = 306.19/x
  3. Step 3: Cross multiply
    325.01x = 489.90 × 306.19
  4. Step 4: Simplify right side
    325.01x = 150,004.24
  5. Step 5: Solve for x
    x = 150,004.24/325.01
  6. Step 6: Final answer
    x = 461.53

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.