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Finding the Fourth Proportional to 479.69, 660.52 and 440.22

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Solution

The fourth proportional to 479.69, 660.52 and 440.22 is: 606.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.69 : 660.52 = 440.22 : x
  2. Step 2: Convert to fraction form
    479.69/660.52 = 440.22/x
  3. Step 3: Cross multiply
    479.69x = 660.52 × 440.22
  4. Step 4: Simplify right side
    479.69x = 290,773.43
  5. Step 5: Solve for x
    x = 290,773.43/479.69
  6. Step 6: Final answer
    x = 606.17

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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.