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Finding the Fourth Proportional to 250.56, 375.36 and 218.16

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Solution

The fourth proportional to 250.56, 375.36 and 218.16 is: 326.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.56 : 375.36 = 218.16 : x
  2. Step 2: Convert to fraction form
    250.56/375.36 = 218.16/x
  3. Step 3: Cross multiply
    250.56x = 375.36 × 218.16
  4. Step 4: Simplify right side
    250.56x = 81,888.54
  5. Step 5: Solve for x
    x = 81,888.54/250.56
  6. Step 6: Final answer
    x = 326.82

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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.