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Finding the Fourth Proportional to 893.75, 1,333.49 and 762.26

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Solution

The fourth proportional to 893.75, 1,333.49 and 762.26 is: 1,137.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.75 : 1,333.49 = 762.26 : x
  2. Step 2: Convert to fraction form
    893.75/1,333.49 = 762.26/x
  3. Step 3: Cross multiply
    893.75x = 1,333.49 × 762.26
  4. Step 4: Simplify right side
    893.75x = 1,016,455.61
  5. Step 5: Solve for x
    x = 1,016,455.61/893.75
  6. Step 6: Final answer
    x = 1,137.30

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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.