Finding the Fourth Proportional to 90.22, 134.99 and 90
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Solution
The fourth proportional to 90.22, 134.99 and 90 is: 134.66
Step by Step Solution
- Step 1: Write the proportion equation
90.22 : 134.99 = 90 : x - Step 2: Convert to fraction form
90.22/134.99 = 90/x - Step 3: Cross multiply
90.22x = 134.99 × 90 - Step 4: Simplify right side
90.22x = 12,149.10 - Step 5: Solve for x
x = 12,149.10/90.22 - Step 6: Final answer
x = 134.66
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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.