Finding the Fourth Proportional to 98.13, 135.35 and 61.26
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Solution
The fourth proportional to 98.13, 135.35 and 61.26 is: 84.49
Step by Step Solution
- Step 1: Write the proportion equation
98.13 : 135.35 = 61.26 : x - Step 2: Convert to fraction form
98.13/135.35 = 61.26/x - Step 3: Cross multiply
98.13x = 135.35 × 61.26 - Step 4: Simplify right side
98.13x = 8,291.23 - Step 5: Solve for x
x = 8,291.23/98.13 - Step 6: Final answer
x = 84.49
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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.