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Finding the Fourth Proportional to 250.89, 374.12 and 216.87

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Solution

The fourth proportional to 250.89, 374.12 and 216.87 is: 323.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.89 : 374.12 = 216.87 : x
  2. Step 2: Convert to fraction form
    250.89/374.12 = 216.87/x
  3. Step 3: Cross multiply
    250.89x = 374.12 × 216.87
  4. Step 4: Simplify right side
    250.89x = 81,134.32
  5. Step 5: Solve for x
    x = 81,134.32/250.89
  6. Step 6: Final answer
    x = 323.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.