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Finding the Fourth Proportional to 1,192.05, 1,645.11 and 896.85

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Solution

The fourth proportional to 1,192.05, 1,645.11 and 896.85 is: 1,237.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,192.05 : 1,645.11 = 896.85 : x
  2. Step 2: Convert to fraction form
    1,192.05/1,645.11 = 896.85/x
  3. Step 3: Cross multiply
    1,192.05x = 1,645.11 × 896.85
  4. Step 4: Simplify right side
    1,192.05x = 1,475,416.90
  5. Step 5: Solve for x
    x = 1,475,416.90/1,192.05
  6. Step 6: Final answer
    x = 1,237.71

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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.