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Finding the Fourth Proportional to 1,396.15, 2,094.16 and 422.22

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Solution

The fourth proportional to 1,396.15, 2,094.16 and 422.22 is: 633.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,396.15 : 2,094.16 = 422.22 : x
  2. Step 2: Convert to fraction form
    1,396.15/2,094.16 = 422.22/x
  3. Step 3: Cross multiply
    1,396.15x = 2,094.16 × 422.22
  4. Step 4: Simplify right side
    1,396.15x = 884,196.24
  5. Step 5: Solve for x
    x = 884,196.24/1,396.15
  6. Step 6: Final answer
    x = 633.31

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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.