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Finding the Fourth Proportional to 365.45, 504.38 and 208.11

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Solution

The fourth proportional to 365.45, 504.38 and 208.11 is: 287.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.45 : 504.38 = 208.11 : x
  2. Step 2: Convert to fraction form
    365.45/504.38 = 208.11/x
  3. Step 3: Cross multiply
    365.45x = 504.38 × 208.11
  4. Step 4: Simplify right side
    365.45x = 104,964.22
  5. Step 5: Solve for x
    x = 104,964.22/365.45
  6. Step 6: Final answer
    x = 287.22

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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.