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Finding the Fourth Proportional to 697.33, 961.97 and 402.42

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Solution

The fourth proportional to 697.33, 961.97 and 402.42 is: 555.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.33 : 961.97 = 402.42 : x
  2. Step 2: Convert to fraction form
    697.33/961.97 = 402.42/x
  3. Step 3: Cross multiply
    697.33x = 961.97 × 402.42
  4. Step 4: Simplify right side
    697.33x = 387,115.97
  5. Step 5: Solve for x
    x = 387,115.97/697.33
  6. Step 6: Final answer
    x = 555.14

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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.