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Finding the Fourth Proportional to 417.03, 625.54 and 108.86

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Solution

The fourth proportional to 417.03, 625.54 and 108.86 is: 163.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    417.03 : 625.54 = 108.86 : x
  2. Step 2: Convert to fraction form
    417.03/625.54 = 108.86/x
  3. Step 3: Cross multiply
    417.03x = 625.54 × 108.86
  4. Step 4: Simplify right side
    417.03x = 68,096.28
  5. Step 5: Solve for x
    x = 68,096.28/417.03
  6. Step 6: Final answer
    x = 163.29

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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.