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Finding the Fourth Proportional to 482.74, 666.27 and 286.36

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Solution

The fourth proportional to 482.74, 666.27 and 286.36 is: 395.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.74 : 666.27 = 286.36 : x
  2. Step 2: Convert to fraction form
    482.74/666.27 = 286.36/x
  3. Step 3: Cross multiply
    482.74x = 666.27 × 286.36
  4. Step 4: Simplify right side
    482.74x = 190,791.41
  5. Step 5: Solve for x
    x = 190,791.41/482.74
  6. Step 6: Final answer
    x = 395.23

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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.