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Finding the Fourth Proportional to 694.39, 956.30 and 611.46

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Solution

The fourth proportional to 694.39, 956.30 and 611.46 is: 842.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.39 : 956.30 = 611.46 : x
  2. Step 2: Convert to fraction form
    694.39/956.30 = 611.46/x
  3. Step 3: Cross multiply
    694.39x = 956.30 × 611.46
  4. Step 4: Simplify right side
    694.39x = 584,738.53
  5. Step 5: Solve for x
    x = 584,738.53/694.39
  6. Step 6: Final answer
    x = 842.09

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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.