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Finding the Fourth Proportional to 376.03, 561.20 and 329.05

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Solution

The fourth proportional to 376.03, 561.20 and 329.05 is: 491.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.03 : 561.20 = 329.05 : x
  2. Step 2: Convert to fraction form
    376.03/561.20 = 329.05/x
  3. Step 3: Cross multiply
    376.03x = 561.20 × 329.05
  4. Step 4: Simplify right side
    376.03x = 184,662.86
  5. Step 5: Solve for x
    x = 184,662.86/376.03
  6. Step 6: Final answer
    x = 491.09

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.