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Finding the Fourth Proportional to 582.43, 873.09 and 217.12

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Solution

The fourth proportional to 582.43, 873.09 and 217.12 is: 325.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.43 : 873.09 = 217.12 : x
  2. Step 2: Convert to fraction form
    582.43/873.09 = 217.12/x
  3. Step 3: Cross multiply
    582.43x = 873.09 × 217.12
  4. Step 4: Simplify right side
    582.43x = 189,565.30
  5. Step 5: Solve for x
    x = 189,565.30/582.43
  6. Step 6: Final answer
    x = 325.47

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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.