Finding the Fourth Proportional to 468.08, 646.08 and 281.68
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Solution
The fourth proportional to 468.08, 646.08 and 281.68 is: 388.79
Step by Step Solution
- Step 1: Write the proportion equation
468.08 : 646.08 = 281.68 : x - Step 2: Convert to fraction form
468.08/646.08 = 281.68/x - Step 3: Cross multiply
468.08x = 646.08 × 281.68 - Step 4: Simplify right side
468.08x = 181,985.14 - Step 5: Solve for x
x = 181,985.14/468.08 - Step 6: Final answer
x = 388.79
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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.