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Finding the Fourth Proportional to 365.51, 550.73 and 326.21

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Solution

The fourth proportional to 365.51, 550.73 and 326.21 is: 491.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.51 : 550.73 = 326.21 : x
  2. Step 2: Convert to fraction form
    365.51/550.73 = 326.21/x
  3. Step 3: Cross multiply
    365.51x = 550.73 × 326.21
  4. Step 4: Simplify right side
    365.51x = 179,653.63
  5. Step 5: Solve for x
    x = 179,653.63/365.51
  6. Step 6: Final answer
    x = 491.51

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.