Finding the Fourth Proportional to 420.68, 579.95 and 322.26
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Solution
The fourth proportional to 420.68, 579.95 and 322.26 is: 444.27
Step by Step Solution
- Step 1: Write the proportion equation
420.68 : 579.95 = 322.26 : x - Step 2: Convert to fraction form
420.68/579.95 = 322.26/x - Step 3: Cross multiply
420.68x = 579.95 × 322.26 - Step 4: Simplify right side
420.68x = 186,893.08 - Step 5: Solve for x
x = 186,893.08/420.68 - Step 6: Final answer
x = 444.27
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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.