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Finding the Fourth Proportional to 697.07, 961.97 and 417.43

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Solution

The fourth proportional to 697.07, 961.97 and 417.43 is: 576.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.07 : 961.97 = 417.43 : x
  2. Step 2: Convert to fraction form
    697.07/961.97 = 417.43/x
  3. Step 3: Cross multiply
    697.07x = 961.97 × 417.43
  4. Step 4: Simplify right side
    697.07x = 401,555.14
  5. Step 5: Solve for x
    x = 401,555.14/697.07
  6. Step 6: Final answer
    x = 576.06

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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.