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Finding the Fourth Proportional to 348.77, 480.69 and 296.46

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Solution

The fourth proportional to 348.77, 480.69 and 296.46 is: 408.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.77 : 480.69 = 296.46 : x
  2. Step 2: Convert to fraction form
    348.77/480.69 = 296.46/x
  3. Step 3: Cross multiply
    348.77x = 480.69 × 296.46
  4. Step 4: Simplify right side
    348.77x = 142,505.36
  5. Step 5: Solve for x
    x = 142,505.36/348.77
  6. Step 6: Final answer
    x = 408.59

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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.