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Finding the Fourth Proportional to 348.05, 480.48 and 217.10

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Solution

The fourth proportional to 348.05, 480.48 and 217.10 is: 299.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.05 : 480.48 = 217.10 : x
  2. Step 2: Convert to fraction form
    348.05/480.48 = 217.10/x
  3. Step 3: Cross multiply
    348.05x = 480.48 × 217.10
  4. Step 4: Simplify right side
    348.05x = 104,309.81
  5. Step 5: Solve for x
    x = 104,309.81/348.05
  6. Step 6: Final answer
    x = 299.70

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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.