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Finding the Fourth Proportional to 365.78, 504.77 and 199.99

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Solution

The fourth proportional to 365.78, 504.77 and 199.99 is: 275.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.78 : 504.77 = 199.99 : x
  2. Step 2: Convert to fraction form
    365.78/504.77 = 199.99/x
  3. Step 3: Cross multiply
    365.78x = 504.77 × 199.99
  4. Step 4: Simplify right side
    365.78x = 100,945.43
  5. Step 5: Solve for x
    x = 100,945.43/365.78
  6. Step 6: Final answer
    x = 275.98

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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.