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Finding the Fourth Proportional to 1,329.94, 1,834.77 and 806.05

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Solution

The fourth proportional to 1,329.94, 1,834.77 and 806.05 is: 1,112.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329.94 : 1,834.77 = 806.05 : x
  2. Step 2: Convert to fraction form
    1,329.94/1,834.77 = 806.05/x
  3. Step 3: Cross multiply
    1,329.94x = 1,834.77 × 806.05
  4. Step 4: Simplify right side
    1,329.94x = 1,478,916.36
  5. Step 5: Solve for x
    x = 1,478,916.36/1,329.94
  6. Step 6: Final answer
    x = 1,112.02

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1.5x scale

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.