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Finding the Fourth Proportional to 1,195.09, 1,644.73 and 1,011

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Solution

The fourth proportional to 1,195.09, 1,644.73 and 1,011 is: 1,391.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,195.09 : 1,644.73 = 1,011 : x
  2. Step 2: Convert to fraction form
    1,195.09/1,644.73 = 1,011/x
  3. Step 3: Cross multiply
    1,195.09x = 1,644.73 × 1,011
  4. Step 4: Simplify right side
    1,195.09x = 1,662,822.03
  5. Step 5: Solve for x
    x = 1,662,822.03/1,195.09
  6. Step 6: Final answer
    x = 1,391.38

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.