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Finding the Fourth Proportional to 694.24, 956.01 and 620.53

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Solution

The fourth proportional to 694.24, 956.01 and 620.53 is: 854.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.24 : 956.01 = 620.53 : x
  2. Step 2: Convert to fraction form
    694.24/956.01 = 620.53/x
  3. Step 3: Cross multiply
    694.24x = 956.01 × 620.53
  4. Step 4: Simplify right side
    694.24x = 593,232.89
  5. Step 5: Solve for x
    x = 593,232.89/694.24
  6. Step 6: Final answer
    x = 854.51

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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.