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Finding the Fourth Proportional to 844.23, 1,164.87 and 490.08

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Solution

The fourth proportional to 844.23, 1,164.87 and 490.08 is: 676.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.23 : 1,164.87 = 490.08 : x
  2. Step 2: Convert to fraction form
    844.23/1,164.87 = 490.08/x
  3. Step 3: Cross multiply
    844.23x = 1,164.87 × 490.08
  4. Step 4: Simplify right side
    844.23x = 570,879.49
  5. Step 5: Solve for x
    x = 570,879.49/844.23
  6. Step 6: Final answer
    x = 676.21

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Double scale
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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.