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Finding the Fourth Proportional to 568.26, 852.79 and 385.20

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Solution

The fourth proportional to 568.26, 852.79 and 385.20 is: 578.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.26 : 852.79 = 385.20 : x
  2. Step 2: Convert to fraction form
    568.26/852.79 = 385.20/x
  3. Step 3: Cross multiply
    568.26x = 852.79 × 385.20
  4. Step 4: Simplify right side
    568.26x = 328,494.71
  5. Step 5: Solve for x
    x = 328,494.71/568.26
  6. Step 6: Final answer
    x = 578.07

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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.