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Finding the Fourth Proportional to 479.49, 660.99 and 332.47

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Solution

The fourth proportional to 479.49, 660.99 and 332.47 is: 458.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.49 : 660.99 = 332.47 : x
  2. Step 2: Convert to fraction form
    479.49/660.99 = 332.47/x
  3. Step 3: Cross multiply
    479.49x = 660.99 × 332.47
  4. Step 4: Simplify right side
    479.49x = 219,759.35
  5. Step 5: Solve for x
    x = 219,759.35/479.49
  6. Step 6: Final answer
    x = 458.32

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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.