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Finding the Fourth Proportional to 550.80, 761.40 and 441.36

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Solution

The fourth proportional to 550.80, 761.40 and 441.36 is: 610.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.80 : 761.40 = 441.36 : x
  2. Step 2: Convert to fraction form
    550.80/761.40 = 441.36/x
  3. Step 3: Cross multiply
    550.80x = 761.40 × 441.36
  4. Step 4: Simplify right side
    550.80x = 336,051.50
  5. Step 5: Solve for x
    x = 336,051.50/550.80
  6. Step 6: Final answer
    x = 610.12

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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.