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Finding the Fourth Proportional to 348.80, 484.56 and 345.63

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Solution

The fourth proportional to 348.80, 484.56 and 345.63 is: 480.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.80 : 484.56 = 345.63 : x
  2. Step 2: Convert to fraction form
    348.80/484.56 = 345.63/x
  3. Step 3: Cross multiply
    348.80x = 484.56 × 345.63
  4. Step 4: Simplify right side
    348.80x = 167,478.47
  5. Step 5: Solve for x
    x = 167,478.47/348.80
  6. Step 6: Final answer
    x = 480.16

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.