Finding the Fourth Proportional to 84.54, 116.64 and 58.31
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Solution
The fourth proportional to 84.54, 116.64 and 58.31 is: 80.45
Step by Step Solution
- Step 1: Write the proportion equation
84.54 : 116.64 = 58.31 : x - Step 2: Convert to fraction form
84.54/116.64 = 58.31/x - Step 3: Cross multiply
84.54x = 116.64 × 58.31 - Step 4: Simplify right side
84.54x = 6,800.99 - Step 5: Solve for x
x = 6,800.99/84.54 - Step 6: Final answer
x = 80.45
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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.