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Finding the Fourth Proportional to 674.07, 930.30 and 516.42

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Solution

The fourth proportional to 674.07, 930.30 and 516.42 is: 712.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.07 : 930.30 = 516.42 : x
  2. Step 2: Convert to fraction form
    674.07/930.30 = 516.42/x
  3. Step 3: Cross multiply
    674.07x = 930.30 × 516.42
  4. Step 4: Simplify right side
    674.07x = 480,425.53
  5. Step 5: Solve for x
    x = 480,425.53/674.07
  6. Step 6: Final answer
    x = 712.72

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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.