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Finding the Fourth Proportional to 568.06, 851.28 and 259.15

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Solution

The fourth proportional to 568.06, 851.28 and 259.15 is: 388.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.06 : 851.28 = 259.15 : x
  2. Step 2: Convert to fraction form
    568.06/851.28 = 259.15/x
  3. Step 3: Cross multiply
    568.06x = 851.28 × 259.15
  4. Step 4: Simplify right side
    568.06x = 220,609.21
  5. Step 5: Solve for x
    x = 220,609.21/568.06
  6. Step 6: Final answer
    x = 388.36

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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.