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Finding the Fourth Proportional to 817.26, 1,225.72 and 232.17

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Solution

The fourth proportional to 817.26, 1,225.72 and 232.17 is: 348.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    817.26 : 1,225.72 = 232.17 : x
  2. Step 2: Convert to fraction form
    817.26/1,225.72 = 232.17/x
  3. Step 3: Cross multiply
    817.26x = 1,225.72 × 232.17
  4. Step 4: Simplify right side
    817.26x = 284,575.41
  5. Step 5: Solve for x
    x = 284,575.41/817.26
  6. Step 6: Final answer
    x = 348.21

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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.