Finding the Fourth Proportional to 61.09, 91.56 and 41.80
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Solution
The fourth proportional to 61.09, 91.56 and 41.80 is: 62.65
Step by Step Solution
- Step 1: Write the proportion equation
61.09 : 91.56 = 41.80 : x - Step 2: Convert to fraction form
61.09/91.56 = 41.80/x - Step 3: Cross multiply
61.09x = 91.56 × 41.80 - Step 4: Simplify right side
61.09x = 3,827.21 - Step 5: Solve for x
x = 3,827.21/61.09 - Step 6: Final answer
x = 62.65
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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.