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Finding the Fourth Proportional to 636.74, 955.22 and 344.53

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Solution

The fourth proportional to 636.74, 955.22 and 344.53 is: 516.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.74 : 955.22 = 344.53 : x
  2. Step 2: Convert to fraction form
    636.74/955.22 = 344.53/x
  3. Step 3: Cross multiply
    636.74x = 955.22 × 344.53
  4. Step 4: Simplify right side
    636.74x = 329,099.70
  5. Step 5: Solve for x
    x = 329,099.70/636.74
  6. Step 6: Final answer
    x = 516.85

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1.5x scale

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.