Finding the Fourth Proportional to 61.15, 91.61 and 35.09
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Solution
The fourth proportional to 61.15, 91.61 and 35.09 is: 52.56
Step by Step Solution
- Step 1: Write the proportion equation
61.15 : 91.61 = 35.09 : x - Step 2: Convert to fraction form
61.15/91.61 = 35.09/x - Step 3: Cross multiply
61.15x = 91.61 × 35.09 - Step 4: Simplify right side
61.15x = 3,214.13 - Step 5: Solve for x
x = 3,214.13/61.15 - Step 6: Final answer
x = 52.56
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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.