Finding the Fourth Proportional to 93.28, 139.84 and 84.48
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Solution
The fourth proportional to 93.28, 139.84 and 84.48 is: 126.65
Step by Step Solution
- Step 1: Write the proportion equation
93.28 : 139.84 = 84.48 : x - Step 2: Convert to fraction form
93.28/139.84 = 84.48/x - Step 3: Cross multiply
93.28x = 139.84 × 84.48 - Step 4: Simplify right side
93.28x = 11,813.68 - Step 5: Solve for x
x = 11,813.68/93.28 - Step 6: Final answer
x = 126.65
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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.