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Finding the Fourth Proportional to 568.67, 852.40 and 405.86

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Solution

The fourth proportional to 568.67, 852.40 and 405.86 is: 608.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.67 : 852.40 = 405.86 : x
  2. Step 2: Convert to fraction form
    568.67/852.40 = 405.86/x
  3. Step 3: Cross multiply
    568.67x = 852.40 × 405.86
  4. Step 4: Simplify right side
    568.67x = 345,954.96
  5. Step 5: Solve for x
    x = 345,954.96/568.67
  6. Step 6: Final answer
    x = 608.36

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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.