Finding the Fourth Proportional to 132.87, 183.35 and 79.70
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Solution
The fourth proportional to 132.87, 183.35 and 79.70 is: 109.97
Step by Step Solution
- Step 1: Write the proportion equation
132.87 : 183.35 = 79.70 : x - Step 2: Convert to fraction form
132.87/183.35 = 79.70/x - Step 3: Cross multiply
132.87x = 183.35 × 79.70 - Step 4: Simplify right side
132.87x = 14,611.68 - Step 5: Solve for x
x = 14,611.68/132.87 - Step 6: Final answer
x = 109.97
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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.