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Finding the Fourth Proportional to 400.01, 551.80 and 268.79

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Solution

The fourth proportional to 400.01, 551.80 and 268.79 is: 370.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.01 : 551.80 = 268.79 : x
  2. Step 2: Convert to fraction form
    400.01/551.80 = 268.79/x
  3. Step 3: Cross multiply
    400.01x = 551.80 × 268.79
  4. Step 4: Simplify right side
    400.01x = 148,314.89
  5. Step 5: Solve for x
    x = 148,314.89/400.01
  6. Step 6: Final answer
    x = 370.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.