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Finding the Fourth Proportional to 376.21, 562.87 and 239.19

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Solution

The fourth proportional to 376.21, 562.87 and 239.19 is: 357.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.21 : 562.87 = 239.19 : x
  2. Step 2: Convert to fraction form
    376.21/562.87 = 239.19/x
  3. Step 3: Cross multiply
    376.21x = 562.87 × 239.19
  4. Step 4: Simplify right side
    376.21x = 134,632.88
  5. Step 5: Solve for x
    x = 134,632.88/376.21
  6. Step 6: Final answer
    x = 357.87

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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.