Finding the Fourth Proportional to 52.82, 79.17 and 42.70
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Solution
The fourth proportional to 52.82, 79.17 and 42.70 is: 63.99
Step by Step Solution
- Step 1: Write the proportion equation
52.82 : 79.17 = 42.70 : x - Step 2: Convert to fraction form
52.82/79.17 = 42.70/x - Step 3: Cross multiply
52.82x = 79.17 × 42.70 - Step 4: Simplify right side
52.82x = 3,380.20 - Step 5: Solve for x
x = 3,380.20/52.82 - Step 6: Final answer
x = 63.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.