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Finding the Fourth Proportional to 568.68, 853.14 and 280.08

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Solution

The fourth proportional to 568.68, 853.14 and 280.08 is: 420.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.68 : 853.14 = 280.08 : x
  2. Step 2: Convert to fraction form
    568.68/853.14 = 280.08/x
  3. Step 3: Cross multiply
    568.68x = 853.14 × 280.08
  4. Step 4: Simplify right side
    568.68x = 238,947.45
  5. Step 5: Solve for x
    x = 238,947.45/568.68
  6. Step 6: Final answer
    x = 420.18

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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.