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Finding the Fourth Proportional to 568.28, 783.72 and 411.95

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Solution

The fourth proportional to 568.28, 783.72 and 411.95 is: 568.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.28 : 783.72 = 411.95 : x
  2. Step 2: Convert to fraction form
    568.28/783.72 = 411.95/x
  3. Step 3: Cross multiply
    568.28x = 783.72 × 411.95
  4. Step 4: Simplify right side
    568.28x = 322,849.54
  5. Step 5: Solve for x
    x = 322,849.54/568.28
  6. Step 6: Final answer
    x = 568.12

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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.