Finding the Fourth Proportional to 93.69, 129.36 and 60.99
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Solution
The fourth proportional to 93.69, 129.36 and 60.99 is: 84.21
Step by Step Solution
- Step 1: Write the proportion equation
93.69 : 129.36 = 60.99 : x - Step 2: Convert to fraction form
93.69/129.36 = 60.99/x - Step 3: Cross multiply
93.69x = 129.36 × 60.99 - Step 4: Simplify right side
93.69x = 7,889.67 - Step 5: Solve for x
x = 7,889.67/93.69 - Step 6: Final answer
x = 84.21
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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.