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Finding the Fourth Proportional to 694.44, 956.16 and 629.64

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Solution

The fourth proportional to 694.44, 956.16 and 629.64 is: 866.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.44 : 956.16 = 629.64 : x
  2. Step 2: Convert to fraction form
    694.44/956.16 = 629.64/x
  3. Step 3: Cross multiply
    694.44x = 956.16 × 629.64
  4. Step 4: Simplify right side
    694.44x = 602,036.58
  5. Step 5: Solve for x
    x = 602,036.58/694.44
  6. Step 6: Final answer
    x = 866.94

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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.