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Finding the Fourth Proportional to 233.04, 349.20 and 208.80

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Solution

The fourth proportional to 233.04, 349.20 and 208.80 is: 312.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.04 : 349.20 = 208.80 : x
  2. Step 2: Convert to fraction form
    233.04/349.20 = 208.80/x
  3. Step 3: Cross multiply
    233.04x = 349.20 × 208.80
  4. Step 4: Simplify right side
    233.04x = 72,912.96
  5. Step 5: Solve for x
    x = 72,912.96/233.04
  6. Step 6: Final answer
    x = 312.88

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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.