Finding the Fourth Proportional to 84.13, 116.18 and 55.09
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Solution
The fourth proportional to 84.13, 116.18 and 55.09 is: 76.07
Step by Step Solution
- Step 1: Write the proportion equation
84.13 : 116.18 = 55.09 : x - Step 2: Convert to fraction form
84.13/116.18 = 55.09/x - Step 3: Cross multiply
84.13x = 116.18 × 55.09 - Step 4: Simplify right side
84.13x = 6,400.08 - Step 5: Solve for x
x = 6,400.08/84.13 - Step 6: Final answer
x = 76.07
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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.