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Finding the Fourth Proportional to 288.68, 397.96 and 233.32

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Solution

The fourth proportional to 288.68, 397.96 and 233.32 is: 321.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    288.68 : 397.96 = 233.32 : x
  2. Step 2: Convert to fraction form
    288.68/397.96 = 233.32/x
  3. Step 3: Cross multiply
    288.68x = 397.96 × 233.32
  4. Step 4: Simplify right side
    288.68x = 92,852.03
  5. Step 5: Solve for x
    x = 92,852.03/288.68
  6. Step 6: Final answer
    x = 321.64

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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.