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Finding the Fourth Proportional to 348.17, 478.27 and 330.62

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Solution

The fourth proportional to 348.17, 478.27 and 330.62 is: 454.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.17 : 478.27 = 330.62 : x
  2. Step 2: Convert to fraction form
    348.17/478.27 = 330.62/x
  3. Step 3: Cross multiply
    348.17x = 478.27 × 330.62
  4. Step 4: Simplify right side
    348.17x = 158,125.63
  5. Step 5: Solve for x
    x = 158,125.63/348.17
  6. Step 6: Final answer
    x = 454.16

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.