Finding the Fourth Proportional to 61.46, 84.84 and 42.08
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Solution
The fourth proportional to 61.46, 84.84 and 42.08 is: 58.09
Step by Step Solution
- Step 1: Write the proportion equation
61.46 : 84.84 = 42.08 : x - Step 2: Convert to fraction form
61.46/84.84 = 42.08/x - Step 3: Cross multiply
61.46x = 84.84 × 42.08 - Step 4: Simplify right side
61.46x = 3,570.07 - Step 5: Solve for x
x = 3,570.07/61.46 - Step 6: Final answer
x = 58.09
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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.