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Finding the Third Proportional to 271.69 and 417.66

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Solution

The third proportional to 271.69 and 417.66 is: 642.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.69 : 417.66 = 417.66 : x
  2. Step 2: Convert to fraction form
    271.69/417.66 = 417.66/x
  3. Step 3: Cross multiply
    271.69x = 417.66 × 417.66
  4. Step 4: Simplify right side
    271.69x = 174,436.74
  5. Step 5: Solve for x
    x = 174,436.74/271.69
  6. Step 6: Final answer
    x = 642.05

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.