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Finding the Fourth Proportional to 441.48, 661.56 and 349.80

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Solution

The fourth proportional to 441.48, 661.56 and 349.80 is: 524.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.48 : 661.56 = 349.80 : x
  2. Step 2: Convert to fraction form
    441.48/661.56 = 349.80/x
  3. Step 3: Cross multiply
    441.48x = 661.56 × 349.80
  4. Step 4: Simplify right side
    441.48x = 231,413.69
  5. Step 5: Solve for x
    x = 231,413.69/441.48
  6. Step 6: Final answer
    x = 524.18

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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.