Finding the Fourth Proportional to 920.65, 1,380.99 and 400.63
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Solution
The fourth proportional to 920.65, 1,380.99 and 400.63 is: 600.95
Step by Step Solution
- Step 1: Write the proportion equation
920.65 : 1,380.99 = 400.63 : x - Step 2: Convert to fraction form
920.65/1,380.99 = 400.63/x - Step 3: Cross multiply
920.65x = 1,380.99 × 400.63 - Step 4: Simplify right side
920.65x = 553,266.02 - Step 5: Solve for x
x = 553,266.02/920.65 - Step 6: Final answer
x = 600.95
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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.