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Finding the Fourth Proportional to 479.47, 660.97 and 339.16

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Solution

The fourth proportional to 479.47, 660.97 and 339.16 is: 467.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.47 : 660.97 = 339.16 : x
  2. Step 2: Convert to fraction form
    479.47/660.97 = 339.16/x
  3. Step 3: Cross multiply
    479.47x = 660.97 × 339.16
  4. Step 4: Simplify right side
    479.47x = 224,170.21
  5. Step 5: Solve for x
    x = 224,170.21/479.47
  6. Step 6: Final answer
    x = 467.54

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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.