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Finding the Fourth Proportional to 331.63, 457.62 and 207.28

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Solution

The fourth proportional to 331.63, 457.62 and 207.28 is: 286.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.63 : 457.62 = 207.28 : x
  2. Step 2: Convert to fraction form
    331.63/457.62 = 207.28/x
  3. Step 3: Cross multiply
    331.63x = 457.62 × 207.28
  4. Step 4: Simplify right side
    331.63x = 94,857.02
  5. Step 5: Solve for x
    x = 94,857.02/331.63
  6. Step 6: Final answer
    x = 286.03

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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.