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Finding the Fourth Proportional to 634.28, 947.02 and 628.04

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Solution

The fourth proportional to 634.28, 947.02 and 628.04 is: 937.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.28 : 947.02 = 628.04 : x
  2. Step 2: Convert to fraction form
    634.28/947.02 = 628.04/x
  3. Step 3: Cross multiply
    634.28x = 947.02 × 628.04
  4. Step 4: Simplify right side
    634.28x = 594,762.49
  5. Step 5: Solve for x
    x = 594,762.49/634.28
  6. Step 6: Final answer
    x = 937.70

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.