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Finding the Fourth Proportional to 376.04, 518.11 and 355.58

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Solution

The fourth proportional to 376.04, 518.11 and 355.58 is: 489.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.04 : 518.11 = 355.58 : x
  2. Step 2: Convert to fraction form
    376.04/518.11 = 355.58/x
  3. Step 3: Cross multiply
    376.04x = 518.11 × 355.58
  4. Step 4: Simplify right side
    376.04x = 184,229.55
  5. Step 5: Solve for x
    x = 184,229.55/376.04
  6. Step 6: Final answer
    x = 489.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.