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Finding the Fourth Proportional to 568.55, 851.38 and 324.65

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Solution

The fourth proportional to 568.55, 851.38 and 324.65 is: 486.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.55 : 851.38 = 324.65 : x
  2. Step 2: Convert to fraction form
    568.55/851.38 = 324.65/x
  3. Step 3: Cross multiply
    568.55x = 851.38 × 324.65
  4. Step 4: Simplify right side
    568.55x = 276,395.45
  5. Step 5: Solve for x
    x = 276,395.45/568.55
  6. Step 6: Final answer
    x = 486.15

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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.