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Finding the Fourth Proportional to 694.26, 1,036.26 and 612.27

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Solution

The fourth proportional to 694.26, 1,036.26 and 612.27 is: 913.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.26 : 1,036.26 = 612.27 : x
  2. Step 2: Convert to fraction form
    694.26/1,036.26 = 612.27/x
  3. Step 3: Cross multiply
    694.26x = 1,036.26 × 612.27
  4. Step 4: Simplify right side
    694.26x = 634,470.91
  5. Step 5: Solve for x
    x = 634,470.91/694.26
  6. Step 6: Final answer
    x = 913.88

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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.