Finding the Fourth Proportional to 135.18, 202.80 and 49.68
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Solution
The fourth proportional to 135.18, 202.80 and 49.68 is: 74.53
Step by Step Solution
- Step 1: Write the proportion equation
135.18 : 202.80 = 49.68 : x - Step 2: Convert to fraction form
135.18/202.80 = 49.68/x - Step 3: Cross multiply
135.18x = 202.80 × 49.68 - Step 4: Simplify right side
135.18x = 10,075.10 - Step 5: Solve for x
x = 10,075.10/135.18 - Step 6: Final answer
x = 74.53
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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.