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Finding the Fourth Proportional to 568.68, 853.26 and 312.36

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Solution

The fourth proportional to 568.68, 853.26 and 312.36 is: 468.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.68 : 853.26 = 312.36 : x
  2. Step 2: Convert to fraction form
    568.68/853.26 = 312.36/x
  3. Step 3: Cross multiply
    568.68x = 853.26 × 312.36
  4. Step 4: Simplify right side
    568.68x = 266,524.29
  5. Step 5: Solve for x
    x = 266,524.29/568.68
  6. Step 6: Final answer
    x = 468.67

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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.