Finding the Fourth Proportional to 884.13, 1,220 and 491.08
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Solution
The fourth proportional to 884.13, 1,220 and 491.08 is: 677.64
Step by Step Solution
- Step 1: Write the proportion equation
884.13 : 1,220 = 491.08 : x - Step 2: Convert to fraction form
884.13/1,220 = 491.08/x - Step 3: Cross multiply
884.13x = 1,220 × 491.08 - Step 4: Simplify right side
884.13x = 599,117.60 - Step 5: Solve for x
x = 599,117.60/884.13 - Step 6: Final answer
x = 677.64
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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.