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Finding the Fourth Proportional to 439.50, 606.46 and 242.99

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Solution

The fourth proportional to 439.50, 606.46 and 242.99 is: 335.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.50 : 606.46 = 242.99 : x
  2. Step 2: Convert to fraction form
    439.50/606.46 = 242.99/x
  3. Step 3: Cross multiply
    439.50x = 606.46 × 242.99
  4. Step 4: Simplify right side
    439.50x = 147,360.08
  5. Step 5: Solve for x
    x = 147,360.08/439.50
  6. Step 6: Final answer
    x = 335.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.