Finding the Fourth Proportional to 935.12, 1,290.36 and 542
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Solution
The fourth proportional to 935.12, 1,290.36 and 542 is: 747.90
Step by Step Solution
- Step 1: Write the proportion equation
935.12 : 1,290.36 = 542 : x - Step 2: Convert to fraction form
935.12/1,290.36 = 542/x - Step 3: Cross multiply
935.12x = 1,290.36 × 542 - Step 4: Simplify right side
935.12x = 699,375.12 - Step 5: Solve for x
x = 699,375.12/935.12 - Step 6: Final answer
x = 747.90
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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.