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Finding the Fourth Proportional to 1,453.07, 2,005.26 and 789.95

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Solution

The fourth proportional to 1,453.07, 2,005.26 and 789.95 is: 1,090.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,453.07 : 2,005.26 = 789.95 : x
  2. Step 2: Convert to fraction form
    1,453.07/2,005.26 = 789.95/x
  3. Step 3: Cross multiply
    1,453.07x = 2,005.26 × 789.95
  4. Step 4: Simplify right side
    1,453.07x = 1,584,057.19
  5. Step 5: Solve for x
    x = 1,584,057.19/1,453.07
  6. Step 6: Final answer
    x = 1,090.14

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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.