Finding the Fourth Proportional to 805.18, 1,110.97 and 490.44
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Solution
The fourth proportional to 805.18, 1,110.97 and 490.44 is: 676.70
Step by Step Solution
- Step 1: Write the proportion equation
805.18 : 1,110.97 = 490.44 : x - Step 2: Convert to fraction form
805.18/1,110.97 = 490.44/x - Step 3: Cross multiply
805.18x = 1,110.97 × 490.44 - Step 4: Simplify right side
805.18x = 544,864.13 - Step 5: Solve for x
x = 544,864.13/805.18 - Step 6: Final answer
x = 676.70
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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.