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Finding the Fourth Proportional to 348.30, 480.64 and 193.05

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Solution

The fourth proportional to 348.30, 480.64 and 193.05 is: 266.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.30 : 480.64 = 193.05 : x
  2. Step 2: Convert to fraction form
    348.30/480.64 = 193.05/x
  3. Step 3: Cross multiply
    348.30x = 480.64 × 193.05
  4. Step 4: Simplify right side
    348.30x = 92,787.55
  5. Step 5: Solve for x
    x = 92,787.55/348.30
  6. Step 6: Final answer
    x = 266.40

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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.