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Finding the Third Proportional to 271.88 and 433.19

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Solution

The third proportional to 271.88 and 433.19 is: 690.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.88 : 433.19 = 433.19 : x
  2. Step 2: Convert to fraction form
    271.88/433.19 = 433.19/x
  3. Step 3: Cross multiply
    271.88x = 433.19 × 433.19
  4. Step 4: Simplify right side
    271.88x = 187,651.41
  5. Step 5: Solve for x
    x = 187,651.41/271.88
  6. Step 6: Final answer
    x = 690.21

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.