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Finding the Fourth Proportional to 275.73, 380.11 and 228.50

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Solution

The fourth proportional to 275.73, 380.11 and 228.50 is: 315.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.73 : 380.11 = 228.50 : x
  2. Step 2: Convert to fraction form
    275.73/380.11 = 228.50/x
  3. Step 3: Cross multiply
    275.73x = 380.11 × 228.50
  4. Step 4: Simplify right side
    275.73x = 86,855.14
  5. Step 5: Solve for x
    x = 86,855.14/275.73
  6. Step 6: Final answer
    x = 315.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.