Finding the Fourth Proportional to 62.75, 86.63 and 40.63
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Solution
The fourth proportional to 62.75, 86.63 and 40.63 is: 56.09
Step by Step Solution
- Step 1: Write the proportion equation
62.75 : 86.63 = 40.63 : x - Step 2: Convert to fraction form
62.75/86.63 = 40.63/x - Step 3: Cross multiply
62.75x = 86.63 × 40.63 - Step 4: Simplify right side
62.75x = 3,519.14 - Step 5: Solve for x
x = 3,519.14/62.75 - Step 6: Final answer
x = 56.09
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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.