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Finding the Fourth Proportional to 482.74, 665.71 and 447.37

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Solution

The fourth proportional to 482.74, 665.71 and 447.37 is: 616.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.74 : 665.71 = 447.37 : x
  2. Step 2: Convert to fraction form
    482.74/665.71 = 447.37/x
  3. Step 3: Cross multiply
    482.74x = 665.71 × 447.37
  4. Step 4: Simplify right side
    482.74x = 297,818.68
  5. Step 5: Solve for x
    x = 297,818.68/482.74
  6. Step 6: Final answer
    x = 616.93

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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.