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Finding the Fourth Proportional to 697.83, 963.21 and 403.29

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Solution

The fourth proportional to 697.83, 963.21 and 403.29 is: 556.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.83 : 963.21 = 403.29 : x
  2. Step 2: Convert to fraction form
    697.83/963.21 = 403.29/x
  3. Step 3: Cross multiply
    697.83x = 963.21 × 403.29
  4. Step 4: Simplify right side
    697.83x = 388,452.96
  5. Step 5: Solve for x
    x = 388,452.96/697.83
  6. Step 6: Final answer
    x = 556.66

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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.