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Finding the Fourth Proportional to 361.07, 540.80 and 178.07

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Solution

The fourth proportional to 361.07, 540.80 and 178.07 is: 266.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.07 : 540.80 = 178.07 : x
  2. Step 2: Convert to fraction form
    361.07/540.80 = 178.07/x
  3. Step 3: Cross multiply
    361.07x = 540.80 × 178.07
  4. Step 4: Simplify right side
    361.07x = 96,297.33
  5. Step 5: Solve for x
    x = 96,297.33/361.07
  6. Step 6: Final answer
    x = 266.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.