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Finding the Fourth Proportional to 633.40, 949.66 and 325

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Solution

The fourth proportional to 633.40, 949.66 and 325 is: 487.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.40 : 949.66 = 325 : x
  2. Step 2: Convert to fraction form
    633.40/949.66 = 325/x
  3. Step 3: Cross multiply
    633.40x = 949.66 × 325
  4. Step 4: Simplify right side
    633.40x = 308,639.50
  5. Step 5: Solve for x
    x = 308,639.50/633.40
  6. Step 6: Final answer
    x = 487.27

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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.