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Finding the Fourth Proportional to 889.73, 1,334.57 and 694.89

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Solution

The fourth proportional to 889.73, 1,334.57 and 694.89 is: 1,042.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    889.73 : 1,334.57 = 694.89 : x
  2. Step 2: Convert to fraction form
    889.73/1,334.57 = 694.89/x
  3. Step 3: Cross multiply
    889.73x = 1,334.57 × 694.89
  4. Step 4: Simplify right side
    889.73x = 927,381.08
  5. Step 5: Solve for x
    x = 927,381.08/889.73
  6. Step 6: Final answer
    x = 1,042.32

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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.