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Finding the Fourth Proportional to 581.44, 871.76 and 216.16

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Solution

The fourth proportional to 581.44, 871.76 and 216.16 is: 324.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.44 : 871.76 = 216.16 : x
  2. Step 2: Convert to fraction form
    581.44/871.76 = 216.16/x
  3. Step 3: Cross multiply
    581.44x = 871.76 × 216.16
  4. Step 4: Simplify right side
    581.44x = 188,439.64
  5. Step 5: Solve for x
    x = 188,439.64/581.44
  6. Step 6: Final answer
    x = 324.09

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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.