Finding the Fourth Proportional to 84.80, 116.95 and 73.87
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Solution
The fourth proportional to 84.80, 116.95 and 73.87 is: 101.88
Step by Step Solution
- Step 1: Write the proportion equation
84.80 : 116.95 = 73.87 : x - Step 2: Convert to fraction form
84.80/116.95 = 73.87/x - Step 3: Cross multiply
84.80x = 116.95 × 73.87 - Step 4: Simplify right side
84.80x = 8,639.10 - Step 5: Solve for x
x = 8,639.10/84.80 - Step 6: Final answer
x = 101.88
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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.