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Finding the Fourth Proportional to 636.52, 955.05 and 328.47

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Solution

The fourth proportional to 636.52, 955.05 and 328.47 is: 492.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.52 : 955.05 = 328.47 : x
  2. Step 2: Convert to fraction form
    636.52/955.05 = 328.47/x
  3. Step 3: Cross multiply
    636.52x = 955.05 × 328.47
  4. Step 4: Simplify right side
    636.52x = 313,705.27
  5. Step 5: Solve for x
    x = 313,705.27/636.52
  6. Step 6: Final answer
    x = 492.84

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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.