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Finding the Fourth Proportional to 550.45, 759.63 and 301.77

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Solution

The fourth proportional to 550.45, 759.63 and 301.77 is: 416.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.45 : 759.63 = 301.77 : x
  2. Step 2: Convert to fraction form
    550.45/759.63 = 301.77/x
  3. Step 3: Cross multiply
    550.45x = 759.63 × 301.77
  4. Step 4: Simplify right side
    550.45x = 229,233.55
  5. Step 5: Solve for x
    x = 229,233.55/550.45
  6. Step 6: Final answer
    x = 416.45

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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.