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Finding the Fourth Proportional to 361.37, 498.47 and 230.45

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Solution

The fourth proportional to 361.37, 498.47 and 230.45 is: 317.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.37 : 498.47 = 230.45 : x
  2. Step 2: Convert to fraction form
    361.37/498.47 = 230.45/x
  3. Step 3: Cross multiply
    361.37x = 498.47 × 230.45
  4. Step 4: Simplify right side
    361.37x = 114,870.64
  5. Step 5: Solve for x
    x = 114,870.64/361.37
  6. Step 6: Final answer
    x = 317.88

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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.