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Finding the Fourth Proportional to 439.24, 606.15 and 242.74

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Solution

The fourth proportional to 439.24, 606.15 and 242.74 is: 334.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.24 : 606.15 = 242.74 : x
  2. Step 2: Convert to fraction form
    439.24/606.15 = 242.74/x
  3. Step 3: Cross multiply
    439.24x = 606.15 × 242.74
  4. Step 4: Simplify right side
    439.24x = 147,136.85
  5. Step 5: Solve for x
    x = 147,136.85/439.24
  6. Step 6: Final answer
    x = 334.98

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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.