Finding the Fourth Proportional to 420.35, 579.99 and 233.84
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Solution
The fourth proportional to 420.35, 579.99 and 233.84 is: 322.64
Step by Step Solution
- Step 1: Write the proportion equation
420.35 : 579.99 = 233.84 : x - Step 2: Convert to fraction form
420.35/579.99 = 233.84/x - Step 3: Cross multiply
420.35x = 579.99 × 233.84 - Step 4: Simplify right side
420.35x = 135,621.96 - Step 5: Solve for x
x = 135,621.96/420.35 - Step 6: Final answer
x = 322.64
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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.