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Finding the Fourth Proportional to 349.04, 481.20 and 232.40

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Solution

The fourth proportional to 349.04, 481.20 and 232.40 is: 320.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.04 : 481.20 = 232.40 : x
  2. Step 2: Convert to fraction form
    349.04/481.20 = 232.40/x
  3. Step 3: Cross multiply
    349.04x = 481.20 × 232.40
  4. Step 4: Simplify right side
    349.04x = 111,830.88
  5. Step 5: Solve for x
    x = 111,830.88/349.04
  6. Step 6: Final answer
    x = 320.40

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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.