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Finding the Fourth Proportional to 240.70, 361.10 and 103.74

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Solution

The fourth proportional to 240.70, 361.10 and 103.74 is: 155.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.70 : 361.10 = 103.74 : x
  2. Step 2: Convert to fraction form
    240.70/361.10 = 103.74/x
  3. Step 3: Cross multiply
    240.70x = 361.10 × 103.74
  4. Step 4: Simplify right side
    240.70x = 37,460.51
  5. Step 5: Solve for x
    x = 37,460.51/240.70
  6. Step 6: Final answer
    x = 155.63

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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.