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Finding the Fourth Proportional to 361.32, 498.65 and 230.30

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Solution

The fourth proportional to 361.32, 498.65 and 230.30 is: 317.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.32 : 498.65 = 230.30 : x
  2. Step 2: Convert to fraction form
    361.32/498.65 = 230.30/x
  3. Step 3: Cross multiply
    361.32x = 498.65 × 230.30
  4. Step 4: Simplify right side
    361.32x = 114,835.45
  5. Step 5: Solve for x
    x = 114,835.45/361.32
  6. Step 6: Final answer
    x = 317.82

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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.