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Finding the Fourth Proportional to 634.95, 949.68 and 511.02

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Solution

The fourth proportional to 634.95, 949.68 and 511.02 is: 764.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.95 : 949.68 = 511.02 : x
  2. Step 2: Convert to fraction form
    634.95/949.68 = 511.02/x
  3. Step 3: Cross multiply
    634.95x = 949.68 × 511.02
  4. Step 4: Simplify right side
    634.95x = 485,305.47
  5. Step 5: Solve for x
    x = 485,305.47/634.95
  6. Step 6: Final answer
    x = 764.32

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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.