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Finding the Fourth Proportional to 633.28, 949.95 and 340.66

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Solution

The fourth proportional to 633.28, 949.95 and 340.66 is: 511.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.28 : 949.95 = 340.66 : x
  2. Step 2: Convert to fraction form
    633.28/949.95 = 340.66/x
  3. Step 3: Cross multiply
    633.28x = 949.95 × 340.66
  4. Step 4: Simplify right side
    633.28x = 323,609.97
  5. Step 5: Solve for x
    x = 323,609.97/633.28
  6. Step 6: Final answer
    x = 511.01

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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.