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Finding the Fourth Proportional to 251.07, 378.51 and 233.45

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Solution

The fourth proportional to 251.07, 378.51 and 233.45 is: 351.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.07 : 378.51 = 233.45 : x
  2. Step 2: Convert to fraction form
    251.07/378.51 = 233.45/x
  3. Step 3: Cross multiply
    251.07x = 378.51 × 233.45
  4. Step 4: Simplify right side
    251.07x = 88,361.81
  5. Step 5: Solve for x
    x = 88,361.81/251.07
  6. Step 6: Final answer
    x = 351.95

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.