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Finding the Fourth Proportional to 216.70, 326.67 and 202.59

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Solution

The fourth proportional to 216.70, 326.67 and 202.59 is: 305.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    216.70 : 326.67 = 202.59 : x
  2. Step 2: Convert to fraction form
    216.70/326.67 = 202.59/x
  3. Step 3: Cross multiply
    216.70x = 326.67 × 202.59
  4. Step 4: Simplify right side
    216.70x = 66,180.54
  5. Step 5: Solve for x
    x = 66,180.54/216.70
  6. Step 6: Final answer
    x = 305.40

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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.