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Finding the Fourth Proportional to 352.97, 530.15 and 216.29

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Solution

The fourth proportional to 352.97, 530.15 and 216.29 is: 324.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.97 : 530.15 = 216.29 : x
  2. Step 2: Convert to fraction form
    352.97/530.15 = 216.29/x
  3. Step 3: Cross multiply
    352.97x = 530.15 × 216.29
  4. Step 4: Simplify right side
    352.97x = 114,663.41
  5. Step 5: Solve for x
    x = 114,663.41/352.97
  6. Step 6: Final answer
    x = 324.85

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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.