Finding the Fourth Proportional to 891.19, 1,229.99 and 542.08
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Solution
The fourth proportional to 891.19, 1,229.99 and 542.08 is: 748.16
Step by Step Solution
- Step 1: Write the proportion equation
891.19 : 1,229.99 = 542.08 : x - Step 2: Convert to fraction form
891.19/1,229.99 = 542.08/x - Step 3: Cross multiply
891.19x = 1,229.99 × 542.08 - Step 4: Simplify right side
891.19x = 666,747.19 - Step 5: Solve for x
x = 666,747.19/891.19 - Step 6: Final answer
x = 748.16
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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.