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Finding the Fourth Proportional to 437.00, 655.49 and 231.80

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Solution

The fourth proportional to 437.00, 655.49 and 231.80 is: 347.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.00 : 655.49 = 231.80 : x
  2. Step 2: Convert to fraction form
    437.00/655.49 = 231.80/x
  3. Step 3: Cross multiply
    437.00x = 655.49 × 231.80
  4. Step 4: Simplify right side
    437.00x = 151,939.88
  5. Step 5: Solve for x
    x = 151,939.88/437.00
  6. Step 6: Final answer
    x = 347.69

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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.