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Finding the Fourth Proportional to 549.93, 757.81 and 400.05

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Solution

The fourth proportional to 549.93, 757.81 and 400.05 is: 551.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.93 : 757.81 = 400.05 : x
  2. Step 2: Convert to fraction form
    549.93/757.81 = 400.05/x
  3. Step 3: Cross multiply
    549.93x = 757.81 × 400.05
  4. Step 4: Simplify right side
    549.93x = 303,161.89
  5. Step 5: Solve for x
    x = 303,161.89/549.93
  6. Step 6: Final answer
    x = 551.27

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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.