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Finding the Fourth Proportional to 568.69, 853.03 and 157.78

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Solution

The fourth proportional to 568.69, 853.03 and 157.78 is: 236.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.69 : 853.03 = 157.78 : x
  2. Step 2: Convert to fraction form
    568.69/853.03 = 157.78/x
  3. Step 3: Cross multiply
    568.69x = 853.03 × 157.78
  4. Step 4: Simplify right side
    568.69x = 134,591.07
  5. Step 5: Solve for x
    x = 134,591.07/568.69
  6. Step 6: Final answer
    x = 236.67

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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.