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Finding the Fourth Proportional to 889.11, 1,333.67 and 751.75

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Solution

The fourth proportional to 889.11, 1,333.67 and 751.75 is: 1,127.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    889.11 : 1,333.67 = 751.75 : x
  2. Step 2: Convert to fraction form
    889.11/1,333.67 = 751.75/x
  3. Step 3: Cross multiply
    889.11x = 1,333.67 × 751.75
  4. Step 4: Simplify right side
    889.11x = 1,002,579.33
  5. Step 5: Solve for x
    x = 1,002,579.33/889.11
  6. Step 6: Final answer
    x = 1,127.62

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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.