Finding the Fourth Proportional to 94.86, 130.59 and 72.99
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Solution
The fourth proportional to 94.86, 130.59 and 72.99 is: 100.48
Step by Step Solution
- Step 1: Write the proportion equation
94.86 : 130.59 = 72.99 : x - Step 2: Convert to fraction form
94.86/130.59 = 72.99/x - Step 3: Cross multiply
94.86x = 130.59 × 72.99 - Step 4: Simplify right side
94.86x = 9,531.76 - Step 5: Solve for x
x = 9,531.76/94.86 - Step 6: Final answer
x = 100.48
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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.