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Finding the Fourth Proportional to 277.35, 415.50 and 216.30

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Solution

The fourth proportional to 277.35, 415.50 and 216.30 is: 324.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.35 : 415.50 = 216.30 : x
  2. Step 2: Convert to fraction form
    277.35/415.50 = 216.30/x
  3. Step 3: Cross multiply
    277.35x = 415.50 × 216.30
  4. Step 4: Simplify right side
    277.35x = 89,872.65
  5. Step 5: Solve for x
    x = 89,872.65/277.35
  6. Step 6: Final answer
    x = 324.04

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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.