Finding the Fourth Proportional to 420.08, 630.36 and 237.68
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Solution
The fourth proportional to 420.08, 630.36 and 237.68 is: 356.66
Step by Step Solution
- Step 1: Write the proportion equation
420.08 : 630.36 = 237.68 : x - Step 2: Convert to fraction form
420.08/630.36 = 237.68/x - Step 3: Cross multiply
420.08x = 630.36 × 237.68 - Step 4: Simplify right side
420.08x = 149,823.96 - Step 5: Solve for x
x = 149,823.96/420.08 - Step 6: Final answer
x = 356.66
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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.