Finding the Fourth Proportional to 93.93, 129.69 and 65.99
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Solution
The fourth proportional to 93.93, 129.69 and 65.99 is: 91.11
Step by Step Solution
- Step 1: Write the proportion equation
93.93 : 129.69 = 65.99 : x - Step 2: Convert to fraction form
93.93/129.69 = 65.99/x - Step 3: Cross multiply
93.93x = 129.69 × 65.99 - Step 4: Simplify right side
93.93x = 8,558.24 - Step 5: Solve for x
x = 8,558.24/93.93 - Step 6: Final answer
x = 91.11
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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.