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Finding the Fourth Proportional to 697.79, 963.07 and 531.69

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Solution

The fourth proportional to 697.79, 963.07 and 531.69 is: 733.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.79 : 963.07 = 531.69 : x
  2. Step 2: Convert to fraction form
    697.79/963.07 = 531.69/x
  3. Step 3: Cross multiply
    697.79x = 963.07 × 531.69
  4. Step 4: Simplify right side
    697.79x = 512,054.69
  5. Step 5: Solve for x
    x = 512,054.69/697.79
  6. Step 6: Final answer
    x = 733.82

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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.