Finding the Fourth Proportional to 312.60, 468.63 and 147.99
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Solution
The fourth proportional to 312.60, 468.63 and 147.99 is: 221.86
Step by Step Solution
- Step 1: Write the proportion equation
312.60 : 468.63 = 147.99 : x - Step 2: Convert to fraction form
312.60/468.63 = 147.99/x - Step 3: Cross multiply
312.60x = 468.63 × 147.99 - Step 4: Simplify right side
312.60x = 69,352.55 - Step 5: Solve for x
x = 69,352.55/312.60 - Step 6: Final answer
x = 221.86
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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.