Finding the Fourth Proportional to 61.48, 84.86 and 49.26
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Solution
The fourth proportional to 61.48, 84.86 and 49.26 is: 67.99
Step by Step Solution
- Step 1: Write the proportion equation
61.48 : 84.86 = 49.26 : x - Step 2: Convert to fraction form
61.48/84.86 = 49.26/x - Step 3: Cross multiply
61.48x = 84.86 × 49.26 - Step 4: Simplify right side
61.48x = 4,180.20 - Step 5: Solve for x
x = 4,180.20/61.48 - Step 6: Final answer
x = 67.99
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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.