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Finding the Fourth Proportional to 549.39, 757.76 and 374.79

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Solution

The fourth proportional to 549.39, 757.76 and 374.79 is: 516.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.39 : 757.76 = 374.79 : x
  2. Step 2: Convert to fraction form
    549.39/757.76 = 374.79/x
  3. Step 3: Cross multiply
    549.39x = 757.76 × 374.79
  4. Step 4: Simplify right side
    549.39x = 283,999.00
  5. Step 5: Solve for x
    x = 283,999.00/549.39
  6. Step 6: Final answer
    x = 516.94

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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.