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Finding the Fourth Proportional to 376.61, 564.82 and 145.43

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Solution

The fourth proportional to 376.61, 564.82 and 145.43 is: 218.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.61 : 564.82 = 145.43 : x
  2. Step 2: Convert to fraction form
    376.61/564.82 = 145.43/x
  3. Step 3: Cross multiply
    376.61x = 564.82 × 145.43
  4. Step 4: Simplify right side
    376.61x = 82,141.05
  5. Step 5: Solve for x
    x = 82,141.05/376.61
  6. Step 6: Final answer
    x = 218.11

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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.