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Finding the Fourth Proportional to 376.18, 564.04 and 144.81

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Solution

The fourth proportional to 376.18, 564.04 and 144.81 is: 217.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.18 : 564.04 = 144.81 : x
  2. Step 2: Convert to fraction form
    376.18/564.04 = 144.81/x
  3. Step 3: Cross multiply
    376.18x = 564.04 × 144.81
  4. Step 4: Simplify right side
    376.18x = 81,678.63
  5. Step 5: Solve for x
    x = 81,678.63/376.18
  6. Step 6: Final answer
    x = 217.13

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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.