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Finding the Fourth Proportional to 384.04, 575.28 and 326.84

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Solution

The fourth proportional to 384.04, 575.28 and 326.84 is: 489.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.04 : 575.28 = 326.84 : x
  2. Step 2: Convert to fraction form
    384.04/575.28 = 326.84/x
  3. Step 3: Cross multiply
    384.04x = 575.28 × 326.84
  4. Step 4: Simplify right side
    384.04x = 188,024.52
  5. Step 5: Solve for x
    x = 188,024.52/384.04
  6. Step 6: Final answer
    x = 489.60

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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.