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Finding the Fourth Proportional to 846.41, 1,269.48 and 326.66

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Solution

The fourth proportional to 846.41, 1,269.48 and 326.66 is: 489.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    846.41 : 1,269.48 = 326.66 : x
  2. Step 2: Convert to fraction form
    846.41/1,269.48 = 326.66/x
  3. Step 3: Cross multiply
    846.41x = 1,269.48 × 326.66
  4. Step 4: Simplify right side
    846.41x = 414,682.81
  5. Step 5: Solve for x
    x = 414,682.81/846.41
  6. Step 6: Final answer
    x = 489.93

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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.