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Finding the Third Proportional to 349.13 and 551.06

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Solution

The third proportional to 349.13 and 551.06 is: 869.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.13 : 551.06 = 551.06 : x
  2. Step 2: Convert to fraction form
    349.13/551.06 = 551.06/x
  3. Step 3: Cross multiply
    349.13x = 551.06 × 551.06
  4. Step 4: Simplify right side
    349.13x = 303,669.88
  5. Step 5: Solve for x
    x = 303,669.88/349.13
  6. Step 6: Final answer
    x = 869.80

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.