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Finding the Fourth Proportional to 441.55, 661.37 and 369.55

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Solution

The fourth proportional to 441.55, 661.37 and 369.55 is: 553.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.55 : 661.37 = 369.55 : x
  2. Step 2: Convert to fraction form
    441.55/661.37 = 369.55/x
  3. Step 3: Cross multiply
    441.55x = 661.37 × 369.55
  4. Step 4: Simplify right side
    441.55x = 244,407.44
  5. Step 5: Solve for x
    x = 244,407.44/441.55
  6. Step 6: Final answer
    x = 553.52

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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.