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Finding the Fourth Proportional to 412.88, 617.74 and 361.14

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Solution

The fourth proportional to 412.88, 617.74 and 361.14 is: 540.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    412.88 : 617.74 = 361.14 : x
  2. Step 2: Convert to fraction form
    412.88/617.74 = 361.14/x
  3. Step 3: Cross multiply
    412.88x = 617.74 × 361.14
  4. Step 4: Simplify right side
    412.88x = 223,090.62
  5. Step 5: Solve for x
    x = 223,090.62/412.88
  6. Step 6: Final answer
    x = 540.33

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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.