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Finding the Fourth Proportional to 613.95, 846.92 and 381.03

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Solution

The fourth proportional to 613.95, 846.92 and 381.03 is: 525.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.95 : 846.92 = 381.03 : x
  2. Step 2: Convert to fraction form
    613.95/846.92 = 381.03/x
  3. Step 3: Cross multiply
    613.95x = 846.92 × 381.03
  4. Step 4: Simplify right side
    613.95x = 322,700.02
  5. Step 5: Solve for x
    x = 322,700.02/613.95
  6. Step 6: Final answer
    x = 525.61

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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.