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Finding the Fourth Proportional to 899.70, 1,241.49 and 550.18

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Solution

The fourth proportional to 899.70, 1,241.49 and 550.18 is: 759.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    899.70 : 1,241.49 = 550.18 : x
  2. Step 2: Convert to fraction form
    899.70/1,241.49 = 550.18/x
  3. Step 3: Cross multiply
    899.70x = 1,241.49 × 550.18
  4. Step 4: Simplify right side
    899.70x = 683,042.97
  5. Step 5: Solve for x
    x = 683,042.97/899.70
  6. Step 6: Final answer
    x = 759.19

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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.