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Finding the Fourth Proportional to 406.86, 610.28 and 118.29

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Solution

The fourth proportional to 406.86, 610.28 and 118.29 is: 177.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    406.86 : 610.28 = 118.29 : x
  2. Step 2: Convert to fraction form
    406.86/610.28 = 118.29/x
  3. Step 3: Cross multiply
    406.86x = 610.28 × 118.29
  4. Step 4: Simplify right side
    406.86x = 72,190.02
  5. Step 5: Solve for x
    x = 72,190.02/406.86
  6. Step 6: Final answer
    x = 177.43

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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.