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Finding the Fourth Proportional to 439.10, 659.00 and 231.01

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Solution

The fourth proportional to 439.10, 659.00 and 231.01 is: 346.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.10 : 659.00 = 231.01 : x
  2. Step 2: Convert to fraction form
    439.10/659.00 = 231.01/x
  3. Step 3: Cross multiply
    439.10x = 659.00 × 231.01
  4. Step 4: Simplify right side
    439.10x = 152,234.52
  5. Step 5: Solve for x
    x = 152,234.52/439.10
  6. Step 6: Final answer
    x = 346.70

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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.