Finding the Fourth Proportional to 431.93, 646.99 and 358.63
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Solution
The fourth proportional to 431.93, 646.99 and 358.63 is: 537.19
Step by Step Solution
- Step 1: Write the proportion equation
431.93 : 646.99 = 358.63 : x - Step 2: Convert to fraction form
431.93/646.99 = 358.63/x - Step 3: Cross multiply
431.93x = 646.99 × 358.63 - Step 4: Simplify right side
431.93x = 232,030.02 - Step 5: Solve for x
x = 232,030.02/431.93 - Step 6: Final answer
x = 537.19
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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.