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Finding the Fourth Proportional to 697.36, 962.43 and 431.79

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Solution

The fourth proportional to 697.36, 962.43 and 431.79 is: 595.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.36 : 962.43 = 431.79 : x
  2. Step 2: Convert to fraction form
    697.36/962.43 = 431.79/x
  3. Step 3: Cross multiply
    697.36x = 962.43 × 431.79
  4. Step 4: Simplify right side
    697.36x = 415,567.65
  5. Step 5: Solve for x
    x = 415,567.65/697.36
  6. Step 6: Final answer
    x = 595.92

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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.