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Finding the Fourth Proportional to 216.04, 324.68 and 207.96

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Solution

The fourth proportional to 216.04, 324.68 and 207.96 is: 312.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    216.04 : 324.68 = 207.96 : x
  2. Step 2: Convert to fraction form
    216.04/324.68 = 207.96/x
  3. Step 3: Cross multiply
    216.04x = 324.68 × 207.96
  4. Step 4: Simplify right side
    216.04x = 67,520.45
  5. Step 5: Solve for x
    x = 67,520.45/216.04
  6. Step 6: Final answer
    x = 312.54

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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.