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Finding the Fourth Proportional to 581.91, 872.64 and 216.62

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Solution

The fourth proportional to 581.91, 872.64 and 216.62 is: 324.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.91 : 872.64 = 216.62 : x
  2. Step 2: Convert to fraction form
    581.91/872.64 = 216.62/x
  3. Step 3: Cross multiply
    581.91x = 872.64 × 216.62
  4. Step 4: Simplify right side
    581.91x = 189,026.91
  5. Step 5: Solve for x
    x = 189,026.91/581.91
  6. Step 6: Final answer
    x = 324.84

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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.