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Finding the Fourth Proportional to 439.36, 606.30 and 242.87

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Solution

The fourth proportional to 439.36, 606.30 and 242.87 is: 335.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.36 : 606.30 = 242.87 : x
  2. Step 2: Convert to fraction form
    439.36/606.30 = 242.87/x
  3. Step 3: Cross multiply
    439.36x = 606.30 × 242.87
  4. Step 4: Simplify right side
    439.36x = 147,248.14
  5. Step 5: Solve for x
    x = 147,248.14/439.36
  6. Step 6: Final answer
    x = 335.14

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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.