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Finding the Fourth Proportional to 613.38, 846.20 and 392.26

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Solution

The fourth proportional to 613.38, 846.20 and 392.26 is: 541.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.38 : 846.20 = 392.26 : x
  2. Step 2: Convert to fraction form
    613.38/846.20 = 392.26/x
  3. Step 3: Cross multiply
    613.38x = 846.20 × 392.26
  4. Step 4: Simplify right side
    613.38x = 331,930.41
  5. Step 5: Solve for x
    x = 331,930.41/613.38
  6. Step 6: Final answer
    x = 541.15

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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.