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Finding the Fourth Proportional to 568.07, 850.44 and 431.66

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Solution

The fourth proportional to 568.07, 850.44 and 431.66 is: 646.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.07 : 850.44 = 431.66 : x
  2. Step 2: Convert to fraction form
    568.07/850.44 = 431.66/x
  3. Step 3: Cross multiply
    568.07x = 850.44 × 431.66
  4. Step 4: Simplify right side
    568.07x = 367,100.93
  5. Step 5: Solve for x
    x = 367,100.93/568.07
  6. Step 6: Final answer
    x = 646.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.