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Finding the Fourth Proportional to 943.36, 1,408.49 and 885.04

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Solution

The fourth proportional to 943.36, 1,408.49 and 885.04 is: 1,321.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    943.36 : 1,408.49 = 885.04 : x
  2. Step 2: Convert to fraction form
    943.36/1,408.49 = 885.04/x
  3. Step 3: Cross multiply
    943.36x = 1,408.49 × 885.04
  4. Step 4: Simplify right side
    943.36x = 1,246,569.99
  5. Step 5: Solve for x
    x = 1,246,569.99/943.36
  6. Step 6: Final answer
    x = 1,321.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.