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Finding the Fourth Proportional to 893.70, 1,340.03 and 663.17

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Solution

The fourth proportional to 893.70, 1,340.03 and 663.17 is: 994.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.70 : 1,340.03 = 663.17 : x
  2. Step 2: Convert to fraction form
    893.70/1,340.03 = 663.17/x
  3. Step 3: Cross multiply
    893.70x = 1,340.03 × 663.17
  4. Step 4: Simplify right side
    893.70x = 888,662.65
  5. Step 5: Solve for x
    x = 888,662.65/893.70
  6. Step 6: Final answer
    x = 994.36

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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.