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Finding the Fourth Proportional to 376.42, 564.44 and 211.87

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Solution

The fourth proportional to 376.42, 564.44 and 211.87 is: 317.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.42 : 564.44 = 211.87 : x
  2. Step 2: Convert to fraction form
    376.42/564.44 = 211.87/x
  3. Step 3: Cross multiply
    376.42x = 564.44 × 211.87
  4. Step 4: Simplify right side
    376.42x = 119,586.16
  5. Step 5: Solve for x
    x = 119,586.16/376.42
  6. Step 6: Final answer
    x = 317.69

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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.