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Finding the Fourth Proportional to 348.76, 481.53 and 230.84

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Solution

The fourth proportional to 348.76, 481.53 and 230.84 is: 318.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.76 : 481.53 = 230.84 : x
  2. Step 2: Convert to fraction form
    348.76/481.53 = 230.84/x
  3. Step 3: Cross multiply
    348.76x = 481.53 × 230.84
  4. Step 4: Simplify right side
    348.76x = 111,156.39
  5. Step 5: Solve for x
    x = 111,156.39/348.76
  6. Step 6: Final answer
    x = 318.72

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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.