Finding the Fourth Proportional to 90.03, 135.18 and 55.94
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Solution
The fourth proportional to 90.03, 135.18 and 55.94 is: 83.99
Step by Step Solution
- Step 1: Write the proportion equation
90.03 : 135.18 = 55.94 : x - Step 2: Convert to fraction form
90.03/135.18 = 55.94/x - Step 3: Cross multiply
90.03x = 135.18 × 55.94 - Step 4: Simplify right side
90.03x = 7,561.97 - Step 5: Solve for x
x = 7,561.97/90.03 - Step 6: Final answer
x = 83.99
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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.