Finding the Fourth Proportional to 157.04, 235.62 and 84.95
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Solution
The fourth proportional to 157.04, 235.62 and 84.95 is: 127.45
Step by Step Solution
- Step 1: Write the proportion equation
157.04 : 235.62 = 84.95 : x - Step 2: Convert to fraction form
157.04/235.62 = 84.95/x - Step 3: Cross multiply
157.04x = 235.62 × 84.95 - Step 4: Simplify right side
157.04x = 20,014.74 - Step 5: Solve for x
x = 20,014.74/157.04 - Step 6: Final answer
x = 127.45
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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.