Finding the Fourth Proportional to 338.70, 507.65 and 143.63
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Solution
The fourth proportional to 338.70, 507.65 and 143.63 is: 215.28
Step by Step Solution
- Step 1: Write the proportion equation
338.70 : 507.65 = 143.63 : x - Step 2: Convert to fraction form
338.70/507.65 = 143.63/x - Step 3: Cross multiply
338.70x = 507.65 × 143.63 - Step 4: Simplify right side
338.70x = 72,916.08 - Step 5: Solve for x
x = 72,916.08/338.70 - Step 6: Final answer
x = 215.28
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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.