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Finding the Fourth Proportional to 881.81, 1,323.22 and 361.89

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Solution

The fourth proportional to 881.81, 1,323.22 and 361.89 is: 543.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.81 : 1,323.22 = 361.89 : x
  2. Step 2: Convert to fraction form
    881.81/1,323.22 = 361.89/x
  3. Step 3: Cross multiply
    881.81x = 1,323.22 × 361.89
  4. Step 4: Simplify right side
    881.81x = 478,860.09
  5. Step 5: Solve for x
    x = 478,860.09/881.81
  6. Step 6: Final answer
    x = 543.04

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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.