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Finding the Fourth Proportional to 361.85, 542.73 and 101.87

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Solution

The fourth proportional to 361.85, 542.73 and 101.87 is: 152.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.85 : 542.73 = 101.87 : x
  2. Step 2: Convert to fraction form
    361.85/542.73 = 101.87/x
  3. Step 3: Cross multiply
    361.85x = 542.73 × 101.87
  4. Step 4: Simplify right side
    361.85x = 55,284.68
  5. Step 5: Solve for x
    x = 55,284.68/361.85
  6. Step 6: Final answer
    x = 152.79

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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.