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Finding the Fourth Proportional to 361.28, 498.57 and 230.29

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Solution

The fourth proportional to 361.28, 498.57 and 230.29 is: 317.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.28 : 498.57 = 230.29 : x
  2. Step 2: Convert to fraction form
    361.28/498.57 = 230.29/x
  3. Step 3: Cross multiply
    361.28x = 498.57 × 230.29
  4. Step 4: Simplify right side
    361.28x = 114,815.69
  5. Step 5: Solve for x
    x = 114,815.69/361.28
  6. Step 6: Final answer
    x = 317.80

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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.