Finding the Fourth Proportional to 94.74, 130.75 and 61.99
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Solution
The fourth proportional to 94.74, 130.75 and 61.99 is: 85.55
Step by Step Solution
- Step 1: Write the proportion equation
94.74 : 130.75 = 61.99 : x - Step 2: Convert to fraction form
94.74/130.75 = 61.99/x - Step 3: Cross multiply
94.74x = 130.75 × 61.99 - Step 4: Simplify right side
94.74x = 8,105.06 - Step 5: Solve for x
x = 8,105.06/94.74 - Step 6: Final answer
x = 85.55
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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.