Finding the Fourth Proportional to 805.22, 1,207.42 and 372
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Solution
The fourth proportional to 805.22, 1,207.42 and 372 is: 557.81
Step by Step Solution
- Step 1: Write the proportion equation
805.22 : 1,207.42 = 372 : x - Step 2: Convert to fraction form
805.22/1,207.42 = 372/x - Step 3: Cross multiply
805.22x = 1,207.42 × 372 - Step 4: Simplify right side
805.22x = 449,160.24 - Step 5: Solve for x
x = 449,160.24/805.22 - Step 6: Final answer
x = 557.81
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.