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Finding the Fourth Proportional to 889.09, 1,227.23 and 609.22

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Solution

The fourth proportional to 889.09, 1,227.23 and 609.22 is: 840.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    889.09 : 1,227.23 = 609.22 : x
  2. Step 2: Convert to fraction form
    889.09/1,227.23 = 609.22/x
  3. Step 3: Cross multiply
    889.09x = 1,227.23 × 609.22
  4. Step 4: Simplify right side
    889.09x = 747,653.06
  5. Step 5: Solve for x
    x = 747,653.06/889.09
  6. Step 6: Final answer
    x = 840.92

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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.