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Finding the Fourth Proportional to 568.67, 851.45 and 486.41

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Solution

The fourth proportional to 568.67, 851.45 and 486.41 is: 728.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.67 : 851.45 = 486.41 : x
  2. Step 2: Convert to fraction form
    568.67/851.45 = 486.41/x
  3. Step 3: Cross multiply
    568.67x = 851.45 × 486.41
  4. Step 4: Simplify right side
    568.67x = 414,147.11
  5. Step 5: Solve for x
    x = 414,147.11/568.67
  6. Step 6: Final answer
    x = 728.28

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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.