Finding the Fourth Proportional to 455.65, 683.58 and 130.99
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Solution
The fourth proportional to 455.65, 683.58 and 130.99 is: 196.52
Step by Step Solution
- Step 1: Write the proportion equation
455.65 : 683.58 = 130.99 : x - Step 2: Convert to fraction form
455.65/683.58 = 130.99/x - Step 3: Cross multiply
455.65x = 683.58 × 130.99 - Step 4: Simplify right side
455.65x = 89,543.21 - Step 5: Solve for x
x = 89,543.21/455.65 - Step 6: Final answer
x = 196.52
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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.