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Finding the Fourth Proportional to 1,634.22, 2,255.22 and 888.18

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Solution

The fourth proportional to 1,634.22, 2,255.22 and 888.18 is: 1,225.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,634.22 : 2,255.22 = 888.18 : x
  2. Step 2: Convert to fraction form
    1,634.22/2,255.22 = 888.18/x
  3. Step 3: Cross multiply
    1,634.22x = 2,255.22 × 888.18
  4. Step 4: Simplify right side
    1,634.22x = 2,003,041.30
  5. Step 5: Solve for x
    x = 2,003,041.30/1,634.22
  6. Step 6: Final answer
    x = 1,225.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.