Finding the Fourth Proportional to 61.48, 91.81 and 60.28
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Solution
The fourth proportional to 61.48, 91.81 and 60.28 is: 90.02
Step by Step Solution
- Step 1: Write the proportion equation
61.48 : 91.81 = 60.28 : x - Step 2: Convert to fraction form
61.48/91.81 = 60.28/x - Step 3: Cross multiply
61.48x = 91.81 × 60.28 - Step 4: Simplify right side
61.48x = 5,534.31 - Step 5: Solve for x
x = 5,534.31/61.48 - Step 6: Final answer
x = 90.02
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.