Finding the Fourth Proportional to 930.99, 1,284.87 and 538
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Solution
The fourth proportional to 930.99, 1,284.87 and 538 is: 742.50
Step by Step Solution
- Step 1: Write the proportion equation
930.99 : 1,284.87 = 538 : x - Step 2: Convert to fraction form
930.99/1,284.87 = 538/x - Step 3: Cross multiply
930.99x = 1,284.87 × 538 - Step 4: Simplify right side
930.99x = 691,260.06 - Step 5: Solve for x
x = 691,260.06/930.99 - Step 6: Final answer
x = 742.50
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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.