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Finding the Fourth Proportional to 636.61, 955.28 and 344.12

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Solution

The fourth proportional to 636.61, 955.28 and 344.12 is: 516.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.61 : 955.28 = 344.12 : x
  2. Step 2: Convert to fraction form
    636.61/955.28 = 344.12/x
  3. Step 3: Cross multiply
    636.61x = 955.28 × 344.12
  4. Step 4: Simplify right side
    636.61x = 328,726.18
  5. Step 5: Solve for x
    x = 328,726.18/636.61
  6. Step 6: Final answer
    x = 516.37

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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.