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Finding the Fourth Proportional to 1,190.91, 1,785.33 and 461.00

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Solution

The fourth proportional to 1,190.91, 1,785.33 and 461.00 is: 691.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190.91 : 1,785.33 = 461.00 : x
  2. Step 2: Convert to fraction form
    1,190.91/1,785.33 = 461.00/x
  3. Step 3: Cross multiply
    1,190.91x = 1,785.33 × 461.00
  4. Step 4: Simplify right side
    1,190.91x = 823,028.20
  5. Step 5: Solve for x
    x = 823,028.20/1,190.91
  6. Step 6: Final answer
    x = 691.09

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.