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Finding the Fourth Proportional to 325.84, 489.10 and 189.15

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Solution

The fourth proportional to 325.84, 489.10 and 189.15 is: 283.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.84 : 489.10 = 189.15 : x
  2. Step 2: Convert to fraction form
    325.84/489.10 = 189.15/x
  3. Step 3: Cross multiply
    325.84x = 489.10 × 189.15
  4. Step 4: Simplify right side
    325.84x = 92,513.27
  5. Step 5: Solve for x
    x = 92,513.27/325.84
  6. Step 6: Final answer
    x = 283.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.