Finding the Fourth Proportional to 65.52, 98.40 and 57.99
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Solution
The fourth proportional to 65.52, 98.40 and 57.99 is: 87.09
Step by Step Solution
- Step 1: Write the proportion equation
65.52 : 98.40 = 57.99 : x - Step 2: Convert to fraction form
65.52/98.40 = 57.99/x - Step 3: Cross multiply
65.52x = 98.40 × 57.99 - Step 4: Simplify right side
65.52x = 5,706.22 - Step 5: Solve for x
x = 5,706.22/65.52 - Step 6: Final answer
x = 87.09
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.