Finding the Fourth Proportional to 90.50, 135.62 and 90.08
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Solution
The fourth proportional to 90.50, 135.62 and 90.08 is: 134.99
Step by Step Solution
- Step 1: Write the proportion equation
90.50 : 135.62 = 90.08 : x - Step 2: Convert to fraction form
90.50/135.62 = 90.08/x - Step 3: Cross multiply
90.50x = 135.62 × 90.08 - Step 4: Simplify right side
90.50x = 12,216.65 - Step 5: Solve for x
x = 12,216.65/90.50 - Step 6: Final answer
x = 134.99
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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.