Finding the Fourth Proportional to 387.42, 534.63 and 237.99
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Solution
The fourth proportional to 387.42, 534.63 and 237.99 is: 328.42
Step by Step Solution
- Step 1: Write the proportion equation
387.42 : 534.63 = 237.99 : x - Step 2: Convert to fraction form
387.42/534.63 = 237.99/x - Step 3: Cross multiply
387.42x = 534.63 × 237.99 - Step 4: Simplify right side
387.42x = 127,235.40 - Step 5: Solve for x
x = 127,235.40/387.42 - Step 6: Final answer
x = 328.42
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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.