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Finding the Fourth Proportional to 568.24, 851.72 and 430.88

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Solution

The fourth proportional to 568.24, 851.72 and 430.88 is: 645.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.24 : 851.72 = 430.88 : x
  2. Step 2: Convert to fraction form
    568.24/851.72 = 430.88/x
  3. Step 3: Cross multiply
    568.24x = 851.72 × 430.88
  4. Step 4: Simplify right side
    568.24x = 366,982.70
  5. Step 5: Solve for x
    x = 366,982.70/568.24
  6. Step 6: Final answer
    x = 645.83

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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.