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Finding the Fourth Proportional to 568.20, 784.52 and 372

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Solution

The fourth proportional to 568.20, 784.52 and 372 is: 513.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.20 : 784.52 = 372 : x
  2. Step 2: Convert to fraction form
    568.20/784.52 = 372/x
  3. Step 3: Cross multiply
    568.20x = 784.52 × 372
  4. Step 4: Simplify right side
    568.20x = 291,841.44
  5. Step 5: Solve for x
    x = 291,841.44/568.20
  6. Step 6: Final answer
    x = 513.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.