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Finding the Fourth Proportional to 348.46, 480.68 and 230.46

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Solution

The fourth proportional to 348.46, 480.68 and 230.46 is: 317.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.46 : 480.68 = 230.46 : x
  2. Step 2: Convert to fraction form
    348.46/480.68 = 230.46/x
  3. Step 3: Cross multiply
    348.46x = 480.68 × 230.46
  4. Step 4: Simplify right side
    348.46x = 110,777.51
  5. Step 5: Solve for x
    x = 110,777.51/348.46
  6. Step 6: Final answer
    x = 317.91

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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.