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Finding the Fourth Proportional to 419.20, 577.38 and 363.94

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Solution

The fourth proportional to 419.20, 577.38 and 363.94 is: 501.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    419.20 : 577.38 = 363.94 : x
  2. Step 2: Convert to fraction form
    419.20/577.38 = 363.94/x
  3. Step 3: Cross multiply
    419.20x = 577.38 × 363.94
  4. Step 4: Simplify right side
    419.20x = 210,131.68
  5. Step 5: Solve for x
    x = 210,131.68/419.20
  6. Step 6: Final answer
    x = 501.27

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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.