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Finding the Third Proportional to 277.59 and 408.80

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Solution

The third proportional to 277.59 and 408.80 is: 602.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.59 : 408.80 = 408.80 : x
  2. Step 2: Convert to fraction form
    277.59/408.80 = 408.80/x
  3. Step 3: Cross multiply
    277.59x = 408.80 × 408.80
  4. Step 4: Simplify right side
    277.59x = 167,114.89
  5. Step 5: Solve for x
    x = 167,114.89/277.59
  6. Step 6: Final answer
    x = 602.01

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.