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Finding the Fourth Proportional to 1,408.79, 1,944.07 and 834.26

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Solution

The fourth proportional to 1,408.79, 1,944.07 and 834.26 is: 1,151.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,408.79 : 1,944.07 = 834.26 : x
  2. Step 2: Convert to fraction form
    1,408.79/1,944.07 = 834.26/x
  3. Step 3: Cross multiply
    1,408.79x = 1,944.07 × 834.26
  4. Step 4: Simplify right side
    1,408.79x = 1,621,859.84
  5. Step 5: Solve for x
    x = 1,621,859.84/1,408.79
  6. Step 6: Final answer
    x = 1,151.24

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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.