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Finding the Fourth Proportional to 568.35, 850.69 and 320.89

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Solution

The fourth proportional to 568.35, 850.69 and 320.89 is: 480.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.35 : 850.69 = 320.89 : x
  2. Step 2: Convert to fraction form
    568.35/850.69 = 320.89/x
  3. Step 3: Cross multiply
    568.35x = 850.69 × 320.89
  4. Step 4: Simplify right side
    568.35x = 272,977.91
  5. Step 5: Solve for x
    x = 272,977.91/568.35
  6. Step 6: Final answer
    x = 480.30

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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.