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Finding the Fourth Proportional to 846.16, 1,269.11 and 326.40

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Solution

The fourth proportional to 846.16, 1,269.11 and 326.40 is: 489.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    846.16 : 1,269.11 = 326.40 : x
  2. Step 2: Convert to fraction form
    846.16/1,269.11 = 326.40/x
  3. Step 3: Cross multiply
    846.16x = 1,269.11 × 326.40
  4. Step 4: Simplify right side
    846.16x = 414,241.86
  5. Step 5: Solve for x
    x = 414,241.86/846.16
  6. Step 6: Final answer
    x = 489.56

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