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Finding the Fourth Proportional to 568.92, 853.58 and 280.28

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Solution

The fourth proportional to 568.92, 853.58 and 280.28 is: 420.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.92 : 853.58 = 280.28 : x
  2. Step 2: Convert to fraction form
    568.92/853.58 = 280.28/x
  3. Step 3: Cross multiply
    568.92x = 853.58 × 280.28
  4. Step 4: Simplify right side
    568.92x = 239,241.40
  5. Step 5: Solve for x
    x = 239,241.40/568.92
  6. Step 6: Final answer
    x = 420.52

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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.