Finding the Fourth Proportional to 813.68, 1,122.58 and 534.07
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Solution
The fourth proportional to 813.68, 1,122.58 and 534.07 is: 736.82
Step by Step Solution
- Step 1: Write the proportion equation
813.68 : 1,122.58 = 534.07 : x - Step 2: Convert to fraction form
813.68/1,122.58 = 534.07/x - Step 3: Cross multiply
813.68x = 1,122.58 × 534.07 - Step 4: Simplify right side
813.68x = 599,533.63 - Step 5: Solve for x
x = 599,533.63/813.68 - Step 6: Final answer
x = 736.82
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.