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Finding the Fourth Proportional to 654.66, 981.03 and 634.95

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Solution

The fourth proportional to 654.66, 981.03 and 634.95 is: 951.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.66 : 981.03 = 634.95 : x
  2. Step 2: Convert to fraction form
    654.66/981.03 = 634.95/x
  3. Step 3: Cross multiply
    654.66x = 981.03 × 634.95
  4. Step 4: Simplify right side
    654.66x = 622,905.00
  5. Step 5: Solve for x
    x = 622,905.00/654.66
  6. Step 6: Final answer
    x = 951.49

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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.