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Finding the Fourth Proportional to 890.73, 1,336.07 and 695.89

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Solution

The fourth proportional to 890.73, 1,336.07 and 695.89 is: 1,043.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    890.73 : 1,336.07 = 695.89 : x
  2. Step 2: Convert to fraction form
    890.73/1,336.07 = 695.89/x
  3. Step 3: Cross multiply
    890.73x = 1,336.07 × 695.89
  4. Step 4: Simplify right side
    890.73x = 929,757.75
  5. Step 5: Solve for x
    x = 929,757.75/890.73
  6. Step 6: Final answer
    x = 1,043.82

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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.