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Finding the Fourth Proportional to 893.26, 1,334.79 and 669.43

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Solution

The fourth proportional to 893.26, 1,334.79 and 669.43 is: 1,000.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.26 : 1,334.79 = 669.43 : x
  2. Step 2: Convert to fraction form
    893.26/1,334.79 = 669.43/x
  3. Step 3: Cross multiply
    893.26x = 1,334.79 × 669.43
  4. Step 4: Simplify right side
    893.26x = 893,550.14
  5. Step 5: Solve for x
    x = 893,550.14/893.26
  6. Step 6: Final answer
    x = 1,000.32

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.