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Finding the Fourth Proportional to 439.74, 606.84 and 243.24

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Solution

The fourth proportional to 439.74, 606.84 and 243.24 is: 335.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.74 : 606.84 = 243.24 : x
  2. Step 2: Convert to fraction form
    439.74/606.84 = 243.24/x
  3. Step 3: Cross multiply
    439.74x = 606.84 × 243.24
  4. Step 4: Simplify right side
    439.74x = 147,607.76
  5. Step 5: Solve for x
    x = 147,607.76/439.74
  6. Step 6: Final answer
    x = 335.67

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