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Finding the Fourth Proportional to 365.97, 547.77 and 279.63

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Solution

The fourth proportional to 365.97, 547.77 and 279.63 is: 418.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.97 : 547.77 = 279.63 : x
  2. Step 2: Convert to fraction form
    365.97/547.77 = 279.63/x
  3. Step 3: Cross multiply
    365.97x = 547.77 × 279.63
  4. Step 4: Simplify right side
    365.97x = 153,172.93
  5. Step 5: Solve for x
    x = 153,172.93/365.97
  6. Step 6: Final answer
    x = 418.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.