Finding the Fourth Proportional to 94.62, 130.56 and 55.80
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Solution
The fourth proportional to 94.62, 130.56 and 55.80 is: 76.99
Step by Step Solution
- Step 1: Write the proportion equation
94.62 : 130.56 = 55.80 : x - Step 2: Convert to fraction form
94.62/130.56 = 55.80/x - Step 3: Cross multiply
94.62x = 130.56 × 55.80 - Step 4: Simplify right side
94.62x = 7,285.25 - Step 5: Solve for x
x = 7,285.25/94.62 - Step 6: Final answer
x = 76.99
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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.