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Finding the Fourth Proportional to 382.29, 572.22 and 328.26

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Solution

The fourth proportional to 382.29, 572.22 and 328.26 is: 491.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    382.29 : 572.22 = 328.26 : x
  2. Step 2: Convert to fraction form
    382.29/572.22 = 328.26/x
  3. Step 3: Cross multiply
    382.29x = 572.22 × 328.26
  4. Step 4: Simplify right side
    382.29x = 187,836.94
  5. Step 5: Solve for x
    x = 187,836.94/382.29
  6. Step 6: Final answer
    x = 491.35

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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.