Finding the Fourth Proportional to 98.49, 135.84 and 63.51
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Solution
The fourth proportional to 98.49, 135.84 and 63.51 is: 87.59
Step by Step Solution
- Step 1: Write the proportion equation
98.49 : 135.84 = 63.51 : x - Step 2: Convert to fraction form
98.49/135.84 = 63.51/x - Step 3: Cross multiply
98.49x = 135.84 × 63.51 - Step 4: Simplify right side
98.49x = 8,627.20 - Step 5: Solve for x
x = 8,627.20/98.49 - Step 6: Final answer
x = 87.59
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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.