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Finding the Fourth Proportional to 568.99, 853.49 and 203.80

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Solution

The fourth proportional to 568.99, 853.49 and 203.80 is: 305.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.99 : 853.49 = 203.80 : x
  2. Step 2: Convert to fraction form
    568.99/853.49 = 203.80/x
  3. Step 3: Cross multiply
    568.99x = 853.49 × 203.80
  4. Step 4: Simplify right side
    568.99x = 173,940.24
  5. Step 5: Solve for x
    x = 173,940.24/568.99
  6. Step 6: Final answer
    x = 305.70

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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.