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Finding the Fourth Proportional to 348.58, 481.08 and 215.83

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Solution

The fourth proportional to 348.58, 481.08 and 215.83 is: 297.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.58 : 481.08 = 215.83 : x
  2. Step 2: Convert to fraction form
    348.58/481.08 = 215.83/x
  3. Step 3: Cross multiply
    348.58x = 481.08 × 215.83
  4. Step 4: Simplify right side
    348.58x = 103,831.50
  5. Step 5: Solve for x
    x = 103,831.50/348.58
  6. Step 6: Final answer
    x = 297.87

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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.