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Finding the Fourth Proportional to 479.74, 662.36 and 369.02

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Solution

The fourth proportional to 479.74, 662.36 and 369.02 is: 509.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.74 : 662.36 = 369.02 : x
  2. Step 2: Convert to fraction form
    479.74/662.36 = 369.02/x
  3. Step 3: Cross multiply
    479.74x = 662.36 × 369.02
  4. Step 4: Simplify right side
    479.74x = 244,424.09
  5. Step 5: Solve for x
    x = 244,424.09/479.74
  6. Step 6: Final answer
    x = 509.49

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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.