Finding the Fourth Proportional to 98.23, 135.58 and 58.91
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Solution
The fourth proportional to 98.23, 135.58 and 58.91 is: 81.31
Step by Step Solution
- Step 1: Write the proportion equation
98.23 : 135.58 = 58.91 : x - Step 2: Convert to fraction form
98.23/135.58 = 58.91/x - Step 3: Cross multiply
98.23x = 135.58 × 58.91 - Step 4: Simplify right side
98.23x = 7,987.02 - Step 5: Solve for x
x = 7,987.02/98.23 - Step 6: Final answer
x = 81.31
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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.