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Finding the Fourth Proportional to 418.56, 577.86 and 363.21

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Solution

The fourth proportional to 418.56, 577.86 and 363.21 is: 501.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    418.56 : 577.86 = 363.21 : x
  2. Step 2: Convert to fraction form
    418.56/577.86 = 363.21/x
  3. Step 3: Cross multiply
    418.56x = 577.86 × 363.21
  4. Step 4: Simplify right side
    418.56x = 209,884.53
  5. Step 5: Solve for x
    x = 209,884.53/418.56
  6. Step 6: Final answer
    x = 501.44

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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.