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Finding the Fourth Proportional to 1,192.27, 1,645.57 and 694.90

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Solution

The fourth proportional to 1,192.27, 1,645.57 and 694.90 is: 959.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,192.27 : 1,645.57 = 694.90 : x
  2. Step 2: Convert to fraction form
    1,192.27/1,645.57 = 694.90/x
  3. Step 3: Cross multiply
    1,192.27x = 1,645.57 × 694.90
  4. Step 4: Simplify right side
    1,192.27x = 1,143,506.59
  5. Step 5: Solve for x
    x = 1,143,506.59/1,192.27
  6. Step 6: Final answer
    x = 959.10

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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.