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Finding the Fourth Proportional to 694.04, 958.20 and 628

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Solution

The fourth proportional to 694.04, 958.20 and 628 is: 867.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.04 : 958.20 = 628 : x
  2. Step 2: Convert to fraction form
    694.04/958.20 = 628/x
  3. Step 3: Cross multiply
    694.04x = 958.20 × 628
  4. Step 4: Simplify right side
    694.04x = 601,749.60
  5. Step 5: Solve for x
    x = 601,749.60/694.04
  6. Step 6: Final answer
    x = 867.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.