Finding the Fourth Proportional to 312.70, 468.99 and 93.32
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Solution
The fourth proportional to 312.70, 468.99 and 93.32 is: 139.96
Step by Step Solution
- Step 1: Write the proportion equation
312.70 : 468.99 = 93.32 : x - Step 2: Convert to fraction form
312.70/468.99 = 93.32/x - Step 3: Cross multiply
312.70x = 468.99 × 93.32 - Step 4: Simplify right side
312.70x = 43,764.24 - Step 5: Solve for x
x = 43,764.24/312.70 - Step 6: Final answer
x = 139.96
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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.