Finding the Fourth Proportional to 627.01, 865.36 and 390.99
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Solution
The fourth proportional to 627.01, 865.36 and 390.99 is: 539.63
Step by Step Solution
- Step 1: Write the proportion equation
627.01 : 865.36 = 390.99 : x - Step 2: Convert to fraction form
627.01/865.36 = 390.99/x - Step 3: Cross multiply
627.01x = 865.36 × 390.99 - Step 4: Simplify right side
627.01x = 338,348.08 - Step 5: Solve for x
x = 338,348.08/627.01 - Step 6: Final answer
x = 539.63
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.