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Finding the Fourth Proportional to 636.23, 956.05 and 343.95

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Solution

The fourth proportional to 636.23, 956.05 and 343.95 is: 516.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.23 : 956.05 = 343.95 : x
  2. Step 2: Convert to fraction form
    636.23/956.05 = 343.95/x
  3. Step 3: Cross multiply
    636.23x = 956.05 × 343.95
  4. Step 4: Simplify right side
    636.23x = 328,830.89
  5. Step 5: Solve for x
    x = 328,830.89/636.23
  6. Step 6: Final answer
    x = 516.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.