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Finding the Fourth Proportional to 694.30, 956.94 and 628.30

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Solution

The fourth proportional to 694.30, 956.94 and 628.30 is: 865.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.30 : 956.94 = 628.30 : x
  2. Step 2: Convert to fraction form
    694.30/956.94 = 628.30/x
  3. Step 3: Cross multiply
    694.30x = 956.94 × 628.30
  4. Step 4: Simplify right side
    694.30x = 601,245.40
  5. Step 5: Solve for x
    x = 601,245.40/694.30
  6. Step 6: Final answer
    x = 865.97

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1.5x scale

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.