Finding the Fourth Proportional to 65.79, 97.99 and 64.99
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Solution
The fourth proportional to 65.79, 97.99 and 64.99 is: 96.79
Step by Step Solution
- Step 1: Write the proportion equation
65.79 : 97.99 = 64.99 : x - Step 2: Convert to fraction form
65.79/97.99 = 64.99/x - Step 3: Cross multiply
65.79x = 97.99 × 64.99 - Step 4: Simplify right side
65.79x = 6,367.96 - Step 5: Solve for x
x = 6,367.96/65.79 - Step 6: Final answer
x = 96.79
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.