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Finding the Fourth Proportional to 376.22, 564.35 and 213.77

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Solution

The fourth proportional to 376.22, 564.35 and 213.77 is: 320.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.22 : 564.35 = 213.77 : x
  2. Step 2: Convert to fraction form
    376.22/564.35 = 213.77/x
  3. Step 3: Cross multiply
    376.22x = 564.35 × 213.77
  4. Step 4: Simplify right side
    376.22x = 120,637.21
  5. Step 5: Solve for x
    x = 120,637.21/376.22
  6. Step 6: Final answer
    x = 320.66

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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.