Finding the Fourth Proportional to 61.49, 84.82 and 43.09
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Solution
The fourth proportional to 61.49, 84.82 and 43.09 is: 59.44
Step by Step Solution
- Step 1: Write the proportion equation
61.49 : 84.82 = 43.09 : x - Step 2: Convert to fraction form
61.49/84.82 = 43.09/x - Step 3: Cross multiply
61.49x = 84.82 × 43.09 - Step 4: Simplify right side
61.49x = 3,654.89 - Step 5: Solve for x
x = 3,654.89/61.49 - Step 6: Final answer
x = 59.44
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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.