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Finding the Fourth Proportional to 361.07, 497.72 and 287.27

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Solution

The fourth proportional to 361.07, 497.72 and 287.27 is: 395.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.07 : 497.72 = 287.27 : x
  2. Step 2: Convert to fraction form
    361.07/497.72 = 287.27/x
  3. Step 3: Cross multiply
    361.07x = 497.72 × 287.27
  4. Step 4: Simplify right side
    361.07x = 142,976.10
  5. Step 5: Solve for x
    x = 142,976.10/361.07
  6. Step 6: Final answer
    x = 395.98

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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.