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Finding the Fourth Proportional to 384.53, 576.90 and 326.15

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Solution

The fourth proportional to 384.53, 576.90 and 326.15 is: 489.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.53 : 576.90 = 326.15 : x
  2. Step 2: Convert to fraction form
    384.53/576.90 = 326.15/x
  3. Step 3: Cross multiply
    384.53x = 576.90 × 326.15
  4. Step 4: Simplify right side
    384.53x = 188,155.94
  5. Step 5: Solve for x
    x = 188,155.94/384.53
  6. Step 6: Final answer
    x = 489.31

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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.