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Finding the Fourth Proportional to 408.01, 612.66 and 234.72

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Solution

The fourth proportional to 408.01, 612.66 and 234.72 is: 352.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    408.01 : 612.66 = 234.72 : x
  2. Step 2: Convert to fraction form
    408.01/612.66 = 234.72/x
  3. Step 3: Cross multiply
    408.01x = 612.66 × 234.72
  4. Step 4: Simplify right side
    408.01x = 143,806.16
  5. Step 5: Solve for x
    x = 143,806.16/408.01
  6. Step 6: Final answer
    x = 352.46

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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.