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Finding the Fourth Proportional to 361.99, 540.71 and 300.43

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Solution

The fourth proportional to 361.99, 540.71 and 300.43 is: 448.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.99 : 540.71 = 300.43 : x
  2. Step 2: Convert to fraction form
    361.99/540.71 = 300.43/x
  3. Step 3: Cross multiply
    361.99x = 540.71 × 300.43
  4. Step 4: Simplify right side
    361.99x = 162,445.51
  5. Step 5: Solve for x
    x = 162,445.51/361.99
  6. Step 6: Final answer
    x = 448.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.