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Finding the Fourth Proportional to 288.03, 431.69 and 226.92

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Solution

The fourth proportional to 288.03, 431.69 and 226.92 is: 340.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    288.03 : 431.69 = 226.92 : x
  2. Step 2: Convert to fraction form
    288.03/431.69 = 226.92/x
  3. Step 3: Cross multiply
    288.03x = 431.69 × 226.92
  4. Step 4: Simplify right side
    288.03x = 97,957.96
  5. Step 5: Solve for x
    x = 97,957.96/288.03
  6. Step 6: Final answer
    x = 340.10

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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.