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Finding the Fourth Proportional to 435.98, 654.07 and 216.73

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Solution

The fourth proportional to 435.98, 654.07 and 216.73 is: 325.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.98 : 654.07 = 216.73 : x
  2. Step 2: Convert to fraction form
    435.98/654.07 = 216.73/x
  3. Step 3: Cross multiply
    435.98x = 654.07 × 216.73
  4. Step 4: Simplify right side
    435.98x = 141,754.96
  5. Step 5: Solve for x
    x = 141,754.96/435.98
  6. Step 6: Final answer
    x = 325.14

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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.