Finding the Fourth Proportional to 94.68, 130.74 and 63.68
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Solution
The fourth proportional to 94.68, 130.74 and 63.68 is: 87.93
Step by Step Solution
- Step 1: Write the proportion equation
94.68 : 130.74 = 63.68 : x - Step 2: Convert to fraction form
94.68/130.74 = 63.68/x - Step 3: Cross multiply
94.68x = 130.74 × 63.68 - Step 4: Simplify right side
94.68x = 8,325.52 - Step 5: Solve for x
x = 8,325.52/94.68 - Step 6: Final answer
x = 87.93
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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.