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Finding the Fourth Proportional to 406.93, 610.09 and 132.87

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Solution

The fourth proportional to 406.93, 610.09 and 132.87 is: 199.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    406.93 : 610.09 = 132.87 : x
  2. Step 2: Convert to fraction form
    406.93/610.09 = 132.87/x
  3. Step 3: Cross multiply
    406.93x = 610.09 × 132.87
  4. Step 4: Simplify right side
    406.93x = 81,062.66
  5. Step 5: Solve for x
    x = 81,062.66/406.93
  6. Step 6: Final answer
    x = 199.21

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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.